Tired motor ?
 

last year I had to tune turn the idle up because it would barely run at 650 rpms. Then it would not shift out of drive being that I had it to high, I turned it down. Now it has a harder time starting at such a low RPM. This motor is a 1986 in a older 23 Powerplay. I am thinking that the motor may be getting tired... or really just the cam ? it does not burn any oil and a few years back it had some oil pressure issues and I thougth it might be the gauge and got it back to the marina and it was the oil filter. That was 2002 ?

any ideas ?

Thanks,

Steve

Engine? Carb? Setup would help.
Carb rebuild time? power valve?

Does it run good when off idle? have you lost performance (besides idle)

Yes, carb rebuid a couple of years ago.

350- 260HP

New cap, rotor, wires and plugs in the last 2 years.

this thing use to crank 4800 now maybee 4200 RPM ?

do a comp test.... plugs should be done at 50 hrs.....

Do a leakdown test. Might be time for a valve job.

ok, at what point do I just yank it and put in a new one ?

if the cam is shot and it needs a valve job ?

maybee the cam is ok??

keep them comming ...the advoise that is.

thanks,

Steve

i have a 454 just rebuilt i will sell you....

would it even swap right in with a Alpha ?

what year and model

330HP

365 HP

420HP

Anyone Looking For A 454 30 Over Gen 4 Rebuilt Ready To Go.
Have Exhaust (cmi)...new
454 460 ci
holley carb 830
rpm performer intake
steel crank
4 bolt
srp pistons
dimple rods
crane cam (134241) 534/553 lift 226/236

Sounds like it might have a vacum leak. That is usually the case with and idle problem like that. The carb might be wore out. Throttle shafts worn? causing a leak maybe. but look into that.