View Full Version : General Q & A




  1. 500 EFI Fuel Line longevity
  2. Cigarette 20 Update
  3. Fuel feed issues
  4. Time to replace fuel lines?
  5. Misfiring carb 502
  6. How much does Deck weigh on a Formula 302 SR1. I want to lift it to access stringers
  7. 525 EFI Alarm
  8. Noise when shifting
  9. 525 EFI H2O pressure?
  10. oil temp
  11. Merc 5.7 2bbl 1998 unique concerns.
  12. Replacing dipstick tube in 454
  13. Oil pressure problems!
  14. 454 to 502 repower suggestions
  15. PBM/Erson rods and cranks, comparable??
  16. 500efi overheating hot port header, help
  17. jet size
  18. Motor question for the Guru's...
  19. HP 500 carb fuel mech pumps
  20. Intake to head sealing issue question
  21. Collapsed lifter, bent pushrod
  22. anyone make hinge pin covers?
  23. Value 26 Prowler
  24. Ride quality older 38's which ones to look at
  25. need HEI DUI distributor info
  26. Hardin Marine - Hurricane Lite 525 Headers -- who's got 'em??
  27. solid or rubber prop hub???
  28. 525sc conversion
  29. 7.4 freshwater cooling
  30. Lower than I like Oil Pressure
  31. marine a/c units
  32. aftermarket mechanical fuel pump
  33. need help with code 42 on V6
  34. O2 guage
  35. Bravo 1 Vibration in forward drive not reverse??
  36. Dual trim pumps, one switch?
  37. Remote trim switches
  38. Reading Starts Me Thinking - More Power
  39. Water in fuel lean condition.
  40. Low oil pressure in brand new 502 efi
  41. Serpentine crossover kit
  42. power gone from my 8.2 mercuiser
  43. Moisture in valve covers with oil thermostat?
  44. Power steering leak
  45. 500HP carb- synthetic oil?
  46. oil spray from the front of a new 502 motor custom built
  47. Intake ?
  48. Swain Tech PC-9 Piston Skirt Coating
  49. 81 Formula, both alternators do not work?
  50. Water pump shaft seal
  51. Oil filled bilge - need advise please !
  52. how do you align an engine?
  53. efi vr carb
  54. Easiest way - converting 502 to EFI
  55. 502 mpi no inj. pulse on 1/2 the inj ?
  56. Fuel Injector Replace/Repair 805225A1
  57. Switch standard Bravo 1 to XR?
  58. has anyone ever powder coated blower pulleys
  59. PCM 555 codes
  60. 496 Mag HO front motor mount options?
  61. Camshaft sensor for 2001 496
  62. Murcury Racing HP500
  63. Old School HP500 water pump blown gasket (NOT SEA PUMP)
  64. Fuel tank level sender for formula needed
  65. Quietest thru transom exhaust setup
  66. Oil pressure gauge?
  67. Sloppy steering on bravo want to add hydraulic steering
  68. Which brand do you like?
  69. Merc 5.7 - 260hp
  70. Rapid beeping?
  71. Nordskog sending units?
  72. Autometer Gauge Connections
  73. prop slip?
  74. 781 heads best mods
  75. 38 Fountain fever wind deflecter /where to get one?
  76. How to tell the diffrence between a bravo 1 and 2
  77. any holley TBI experts here?
  78. Cam question
  79. Stupid cam shaft idea? Serious question
  80. Jetting starting point?
  81. drive position indicator - cable type
  82. gen 4 gen 5 question
  83. 1986 Wellcraft Nova III opinions please
  84. Oil sending unit and -----?
  85. 781 bbc heads from auto?
  86. Voltage regulator?
  87. 502 Mag Mpi Issue
  88. Measuring Compression Ratio
  89. Any good internet dynos??
  90. Raylar 496 HO upgrades
  91. 502 500hp efi sumble /stall
  92. Good oil pressure sending unit
  93. Stock 330 fuel pump question
  94. Long or short risers needed for this cam?
  95. Mark IV 502 Mag Hole In Piston And No Oil Pressure Help!
  96. 1000 Islands Poker Run Who is going?
  97. I need 1 set of Stainless Marine Exhaust for a SBC. Who's got the best price?
  98. Sea water/fuel pump questions. Leaking oil.
  99. PowerQuset Interior Lights - HELP NEEDED
  100. Could backfiring cause this?
  101. 454 Cam selection down sizing?
  102. if i had water in bravo one fluid...
  103. csm with vinylester
  104. Mercury efi to holley efi. How to get the correct throttle throw.
  105. electric circulating pump??
  106. Iac for 97 454 mag MPI's part number anyone know.
  107. Q-jet jetting help please
  108. Exhaust Riser gasket?
  109. guys I need help please 496 ho surges almost dies...
  110. Helm joint replacement?
  111. Any A/C techs on Long Island?
  112. EMI Thunder Exhaust On Stock 6.2s
  113. Serpentine to v-belt
  114. Strange MPI problem....
  115. 525efi milk shake
  116. 350 mag miss HELP please
  117. engine fault code?
  118. What thermostat housing for closed cooling system??
  119. blowers
  120. Hard steering at speed..
  121. 502 mpi mods......
  122. Fuel Delivery Issues
  123. Need part # for seal on water pump.
  124. Another newbie prop question
  125. 1997 sv24 challenger boat
  126. MSD Distributor
  127. Help! Merc s/c seals & bushings
  128. Posting pictures with an I Pad
  129. Gen5 to gen 6 have had nothing but problems
  130. Need Torque specs for top two bolts on gimble
  131. 280 Tabs to 380 tabs
  132. Marine Machine Hardware
  133. Small water leak on a XR Drive
  134. Black hose water drain system 496 HO
  135. Solid Roller Cam Worth it??
  136. Weak Starting - Ground?
  137. HELP!! 1996 Baja 302 windshield broken!
  138. circulation pump failure???
  139. How much hp will this build produce
  140. Power steering not working replaced parts...?
  141. Motors marked "BRE 168" any ideas?
  142. square k planes
  143. Simple oil cooler upgrade
  144. Prob and drive height suggestions for Donzi 25zx w 625hp
  145. vacuum pump, blown big block
  146. Merc 502 efi code 23 iat censor
  147. 500 efi exhaust issues
  148. Aluminum Intake manifold + salt brackish water
  149. Mercruiser Automatic Transmission
  150. Where's oil thermostat on merc 525 please
  151. What's considered too much oil pressure?
  152. Melting exhaust boots but engine not running over 180!?!?
  153. milkshake clean up
  154. Spark Plug Gap
  155. Benefits of quad rotor
  156. Any Fast 22ft Stingrays maxims out there??
  157. Distributor housing oil boss
  158. Building a new trailer for a 87 Midnight express 37'. Need help!
  159. Cast crankshaft OK?
  160. Reversion possibility question on SBC with XM270HR cam
  161. Riser gaskets...which one?
  162. 502 MPI w/cool fuel return line fuel flow
  163. Best way to clean the outside of an engine covered in oil?
  164. Replacing MEFI1 with ?
  165. Mystery Piece of Stainless in my Exhaust Tip - please help identify
  166. 8.1 oil bypass valve
  167. Stainless vs brass sea pump
  168. Longevity MIG welder
  169. crane 741 cam and stock roller lifters
  170. 502 fuel injected spudders and dies randomly
  171. Mercrusier 350mag w/Bravo 1
  172. Silent Choice Exhaust not opening.
  173. 500 EFI Powersteering pump defect ???
  174. Pressure test headers question
  175. Trim Tab screws ...kinda came out ....?
  176. Cam recommendations for these heads?
  177. 525 vs 496HO
  178. 454 EFI making a sqealing sound
  179. Mini Starter
  180. Fuel level in cool fuel module 496 HO
  181. 38 Fountain Lightning Worth It or Not ?
  182. EGT ranges procharged carb 555
  183. Hydraulic Ram...Who makes this?
  184. Bad powersteering pump?
  185. Liquid filled water pressure gauge problem
  186. 496 HO in-line fuel filter
  187. Using A MSD Box With Stock Merc Distributor
  188. Engine cover help
  189. Engine trouble shooting help needed.
  190. Any feedback on Venture aluminum trailers? specifically the tandem 5k axle 8725
  191. crank choices
  192. What do you clean your boat with?
  193. Installing water pressure gauge
  194. Oil cooler suggestions for 468 bbc
  195. Value of a mark iv standard 454
  196. Mercury Zero Effort Throttle Wiring
  197. Power Steering issues
  198. Choosing an oil pump
  199. Screws for exhaust tips?
  200. Looking for an engine builder in South Florida...Who do you know?
  201. OX66 Outboard gages to Gaffrig
  202. 454 Mag MPI not revving.
  203. Heat issues help.
  204. Old merc 90 outboard question
  205. Replacement iron heads for Edelbrock RPM performer
  206. Trim Tab Cable Help
  207. Mercruiser 6.2 Upgrades
  208. 704ci Motor Help
  209. 137-9400 mayfair steering
  210. Carb help
  211. Heavy duty shift cable??
  212. Motor Shut Down Filter/Pump/Other
  213. intermittent nav lights and fuel gauge problem?
  214. Baja 260 with 454.... Has mufflers and would like to remove them.....
  215. Gen IV 502 No Oil Pressure..... Help
  216. Timing question..502..
  217. 525 SC fuel problems
  218. 575 sc
  219. hesitation, intermittent backfire etc
  220. When will thes 525s require work?
  221. Running hot according to the gauge.....454
  222. Prop slip calculator
  223. wiring help
  224. Need VDO Temp Sender
  225. New engine in Formula, more problems then a math book!
  226. 502 mpi v-belts part numbers..
  227. TRS transmission problems
  228. Impeller problems
  229. 496 mag help
  230. Size of harmonic balancer pulley bbc?
  231. How fast is an 88 scarab 1 with an efi 502????
  232. Mercruiser 5.7 efi fuel pressure kit from Autozone
  233. 502 mag MPI starts then stalls after replacing cap, rotor, wires and exhaust!
  234. Just got a noise ticket tonight - need options
  235. Broken dip stick tube on my 260 Merc
  236. 454 oil burn... questions on what to check first
  237. Throttle / Shift Controller - Sea Star or Mercruiser
  238. Thru hull tip internal flapper broke
  239. 496 8.1 Timing cover and gear question
  240. LED Gauge Upgrade
  241. 29' baja is shift cable longer with an imco extension box on the drive
  242. ignition troubleshooting ??? help please
  243. External voltage regulator wiring question
  244. 525sc upgrades for more hp
  245. HP 500 intake grommet??
  246. water in oil on fresh rebuilt 468 with m1 procharger intercooled.
  247. power steering pump question..
  248. 502 Catastrophic Failure!!! Why does this happen?
  249. trs to speedmaster
  250. Screw in fuel sending unit
  251. 496HO manifold over heating
  252. K-Planes Bolt Length
  253. Leakdown Test vs Compression Test? Help with a used boat.
  254. Circulating Pumps on 600sc (Convert to X-Overs)
  255. A/C questions
  256. 525 EFI Oil Pressure to High at Idle
  257. Rough idle?
  258. Fuel pump and delivery
  259. Hairline crackin one blade of stainless four blade prop
  260. power steering only works at speed
  261. 1 merc. 700 keeps vaporlocking
  262. New Mallory Ignition, no spark
  263. best replacement trim tab cables for merc k=planes?
  264. 32 fever with small blocks
  265. Feather throttle to keep running until reaching operating temp
  266. Air Fuel ratio
  267. How much HP? on my 454
  268. Comzilla intercoms
  269. Part # for 500 EFI impeller
  270. If you had a choice which one
  271. 1998 Mercury 250 EFI Factory Shop Manual
  272. B&M Blowers 174 type. timing issue?
  273. help! info on powerquest
  274. manifolds length
  275. Dumping cooling water, lightning headers.
  276. silent choice, issue or something else
  277. I.M.P Viper 310 help
  278. Formula 233
  279. I think I stuck a valve
  280. plug gap
  281. Question about GMPP 502ho crate engine.
  282. Shop Labor times to Pull a motor
  283. Hyd steering hose??
  284. 525 Oil Temp Sensor
  285. Carburetor Help
  286. Mefi 3 ??
  287. 502 dies at wot
  288. Help Please!!!! 88 Four Winns Liberator 211 is SLOW!!
  289. Oil Temp Issues
  290. Another 525 Header Issue
  291. 496HO: would IAC cause this? 1 engine lagging intermittently lagging 100-400 RPM
  292. 525sc idling at 180* rising to 210*
  293. New GM 502 Vibration above 1500 RPM
  294. Whats TO HOT FOR OIL TEMP
  295. Right thrust washer? Hub?
  296. Firepower control box
  297. Gen 4, 5 and 6 GM heads same plug reach?
  298. over cam'd motor or pump problem?
  299. Need help with Kohler 5ECD Generator...
  300. Russel Performance AN swivel fitting leaking
  301. A/c unit help
  302. 350 mag mpi won't turn off???
  303. is this a sign that the hull was rotten?
  304. 2 Alternators to choose from
  305. blower size help
  306. Replacing stock thermostat housing with Stainless,,,,,
  307. Mercruiser silent choice
  308. How often to clean the air intake 7.4 mpi
  309. Mercruiser Rev Limit Ignition by Firepower
  310. 496 whipple boost
  311. Cigarette 24 info
  312. Led Cockpit lights
  313. Exhaust Problems
  314. Cobra outdrive not pumping water
  315. Trim not moving evenly
  316. 502 water reversion
  317. Ultimate Warlock 24' Euro
  318. Alpha hit something no forward or reverse
  319. FAST Programmable EFI
  320. Oil foaming out of lower unit trim pump reservoir only while trimming lower unit.
  321. Loose/missing exh flapper
  322. Engine won't get boat on plane - ignition issue?
  323. blown 900 ate a distributor gear over the weekend, what now......
  324. Cost to rig a new hull?
  325. Outdrive Control Box
  326. 502 ss trying to get a hold of u bro ??
  327. Morse Controls
  328. Mercruiser Head Gasket Sealing
  329. Why no oil cooler 350 mag MPI
  330. Go Fast needed for a wedding
  331. Noise at Higher RPM's..... Details inside
  332. Rooster tail fittings on Normal drives - What and where?
  333. Removing compass
  334. Another water in oil milkshake thread
  335. Water in motor..need help fast!!
  336. Head Gaskets...head bolts..
  337. Baja 252 motor help
  338. When started, EFI motor will not idle below 3000 rpm
  339. Smart craft trim limit switch
  340. steering question
  341. Serp belt tension
  342. Lubricant for silicone exhaust hose?
  343. Painted boats hull cleaner?
  344. Scratched CMI polished Sport Tubes
  345. corsa solenoids ratling when diverted to prop
  346. wiring questions
  347. timing chain question
  348. transom assembley help
  349. Pondering the thought of doing a LS motor.......
  350. Any wlders in the house?
  351. Junk VST Electric Fuel Pump
  352. Hardin Gen 7 Sea Pump Install
  353. Motion actuator for power bolster seat, I need one from a Fountain or other boat!
  354. New engine ready to fire but WONT! Expierenced techs Please Help!!!
  355. Steering leak at the helm
  356. Boost referencing carbs
  357. recommended manifolds for 540 tall decks 600hp innovation marine
  358. twin engine fuel burn from side to side.
  359. Drain plug adapter
  360. 496 ho
  361. 03 496 ho double beep
  362. Horrible Idle on a holley 800..
  363. Smallbock oil adapter
  364. WTF,, does anyone make a tall life or ski vest for guys 6'-6'+
  365. 900 low oil pressure and cold filter after oil change???
  366. Recommended GPS with depth capabilities ?
  367. more HP for 502 mpi
  368. Lake Texoma Eating
  369. Running rough at low RPM after warmed up
  370. HP500/ BBC short water pump part#
  371. 502 MPI Surging over 4200 RPM
  372. New Oil Coolers? Yes or No?
  373. Gaffrig oil pressure sender
  374. Merc 7.4 Gen V clicking noise
  375. FAST Air Fuel Meter??
  376. RPM Drop in 1 Engine
  377. 12V DC Air Conditioner - Anyone have any experience with them?
  378. 496 with Whipple
  379. Gen IV Heads On Gen V Block Coolant Port ?
  380. Ethanol resistant fuel line?
  381. motor swap, now gauges dont work
  382. flame arrestor
  383. kiekhaefer trim tab manual or information needed...
  384. Throttle response.
  385. Anyone noticed slower speeds with the higher air temperatures?
  386. Heat Alarm wire..
  387. 1999 Donzi 26ZX performance results with new 502
  388. 600sci Impeller DIY?
  389. Replacing trim and drive indicator cables on Bluewater Performance panel HELP!
  390. Who designs custom dashes for older boats?
  391. Seeking a brochure for a 20 foot Cigarette
  392. Cast Iron manifold -> Stainless exhaust pipe
  393. Valve cover removal with exhaust on?
  394. Mando alternator wiring....
  395. Merc Racing 525EFI. SAE or Metric fasteners?
  396. Dana Exhust
  397. Replacing 502 with 496s
  398. Replacing 555 on 496 with MEFI Controller
  399. Exh manifold leak test w/acetone
  400. single 4150 fuel feed recomendations
  401. running hard with or without Silent Choice open
  402. This pizzes me off! Who is CP performance trying to kid
  403. Size of hose on speed master 3
  404. Swapping to a sea pump on sbc...
  405. anyone have 500efi valve cover baffle pics?
  406. fuel/water separating filters
  407. Pump size nozzle on a stock HP500 holley 850..
  408. Sierrs f/w sapartor
  409. Temp problems with 27' Advantage Victory
  410. Mefi 1 ecm bad, ideas??
  411. Need some help guys! Just bought a new boat.
  412. Dual Carb Adapter Gasket On Blower ?
  413. Skag repair on Sportmater lowers
  414. 1997 Gen VI MPI
  415. L-29 heads question?
  416. 7.4 MPI Vapor Lock and "jip joint gas"
  417. Oil cooler location and funny story
  418. exhaust manifold
  419. Oil Cooler Line Diameter
  420. 454 massive carbon build up on spark plugs back of the boat is covered in suit
  421. best prop for 26 Daytona
  422. 7.4 330 oil leak under power?
  423. Baffled by apparent reversion issues with Lightning headers and mild cam
  424. Changing oil with engs out
  425. Motec display with smartcraft?
  426. 525sc died at 70 mph no spark
  427. Bravo one trimming noise!
  428. Holley power valve sizing.
  429. ( A/F ) air fuel ratio for NA 350 vortex
  430. 330hp to 350hp vortec 454
  431. Engine Weight ?
  432. Fuel leaking out of vent ??
  433. Engine Oil Overfull (Due to extended high RPM runs)
  434. Intake Manifold Oil Leak?
  435. 4 Blade vs 6 Blade.
  436. Geico, Seaworthy Ins, Any Horror Stories?
  437. auto technician needed
  438. trouble with 525 sc
  439. looking for two pair of 4.5 flapprs for myexaust p
  440. 2004 47 fountain oil pressure sending unit
  441. Need opinions/suggestions 12volt battery system
  442. 525EFI water pump
  443. Gil Oil coolers
  444. Turbo question! Advice needed
  445. Dyno Day! Question for engine builders - A/F correction factor for dry dyno headers?
  446. 496 HO 2004 - Shutting down when throttling down
  447. anyone running a 5 blade with 525 efi?
  448. Corsa switchable exhaust swap.... Baja 272
  449. What are they worth?
  450. Ocean Marine AC unit reading HPF???
  451. Recommended oil for my 7.4
  452. Need advice about sea strainer on a superboat
  453. U joint shaft bravo2X
  454. 01 38 fountain lightning gen iv bbc what couplers and housings
  455. Anyone bought a new oil cooler that had something rattle in it?
  456. Power Steering Pump Pressure for Ram
  457. Where can I find a eddie marine part that is no longer made....
  458. Fuel Gauge...
  459. 525 Mercury Racing Engine pulling back once it hits 4200 rpm
  460. lying to your insurance company? ??
  461. TB IV and V ign info
  462. Where to place AFR sendor Or Stanless Marine Exhaust
  463. Backfire through exhaust on initial startup
  464. Hardin marine ?
  465. Spun Prop What Else to Look For
  466. EMI risers, cracked one
  467. 99 formula twin 7.4 mpi bIII vibration/hesitation help
  468. motion 30 vs spectre 30 ??
  469. how to I.D a 454 Magnum
  470. How reliable / durable is the Merc 6.2?
  471. Lost oil pressure
  472. Engine rotation
  473. Comp cams 212 Timing cover
  474. Drying out cabin carpet ??
  475. 502 mpi thoughts on pitching injection and going with the carburetor
  476. WPM Steering
  477. 144 blower on stock 350
  478. Oil Temp Question
  479. Here we go! blew up a blower motor
  480. Owners manual, 1991 Sonic 31'???
  481. Overheating problem-more challenging than usual
  482. Corsa quick and quiet exhaust mufflers
  483. gages
  484. Why jetting so staggered with a single plane?
  485. Anyone want a 2012 38' Powerquest? Looks like an auction for unfinished boat
  486. Carbureted 502 MAG Timing And Fuel Help Please!!
  487. Hardwall water hose
  488. Fuel pressure on carb 454
  489. MLS or Performance head gasket
  490. Dyed vinyl question
  491. 6.2 engine torque?
  492. Compression Test
  493. Finding Taco vinyl rubrail insert
  494. Stainless Braided Trim lines and Kplane line extending
  495. Problem !! Electric gremlin I think.. Help..
  496. Correct Flywheel??
  497. 496 Mag HO Rev Limiter ?
  498. Help with Warlock Performace Machine steering ram
  499. 7.4l 330 hp needs a new carb what do you guys suggest
  500. Replace silent choice on my scarab? or keep replacing seals?