Back fire on start stock 496HO
03-17-2019, 02:07 PM
#42
03-18-2019, 01:29 PM
#46
also guys i have to agree with bup, if youre using auto zone parts instead of mer cruiser you're just asking for trouble,just recently i tried and iac made by sierra which a marine application and it sucked,idle was too high,so high the cam wouldn't even chop and idle speed was higher so i went back to quicksilver and idle is back to how it should be,using aftermarket autoparts might give you a new set of issues if you ask me
03-27-2019, 01:47 PM
#47
Registered
Thread Starter
Finally got back into the engine room after weeks. Went to start; no ignition. Classic CPS.......had before. This is the third one in 7 years and only 200 hrs. Swapped it out and BINGO; running like a raped ape again. Nothing negative, mirror image with port engine. I think I have a serious Electrolysis problem. Will need some advice on that, both engines do not appear to be grounded to one another. Any way I’d say I had a slowly failing CPS that finally totally failed.
03-27-2019, 05:45 PM
#48
Registered
iTrader: (1)
Finally got back into the engine room after weeks. Went to start; no ignition. Classic CPS.......had before. This is the third one in 7 years and only 200 hrs. Swapped it out and BINGO; running like a raped ape again. Nothing negative, mirror image with port engine. I think I have a serious Electrolysis problem. Will need some advice on that, both engines do not appear to be grounded to one another. Any way I’d say I had a slowly failing CPS that finally totally failed.
take it for what ever its worth,I would run a ground wire from one engine to the other,
03-29-2019, 11:11 AM
#50
Banned
iTrader: (9)
Grounds and resistance and EMI and RFI can be the reason for running issues and the cause of sensor failures over time. The water pressure sensor fails easily from EMI / RFI. The crank sensor as well but not like the water pressure sensor. .
Last edited by BUP; 03-29-2019 at 12:14 PM.
