molehunterz asked:


1989 32′ Carver with the original merc 350ci engines. have had the boat for 4 years. engines start/run/idle smoothly and powerfully. when first started and warmed up, the engines will run 3000 to 3200rpms (about 14/15 gph) for an hour with no problems. one motor will suddenly stumble, like it’s not getting fuel. it will pick up again, and stumble, worse and worse… backing off the throttle all the way and shutting off the engine for 1 minute, then restarting - it will run perfect again for 20 minutes? it happens to both motors randomly - with two completely independent systems. (different fuel tanks/lines/pumps/filters…) have changed the filters (both in-line and fuel water separators) numerous times, and see no visable particles, nor any significant change. pulled the pick up line out of the tank and inspected… nothing notable. ideas?
Thanks for the input! more info -

I forgot to mention that both coils have been replaced with new ones. also we have opened the filler cap on the tanks while the problem has been going on to see if they weren’t venting.

both engines do it - and at different times, and at random intervals. they have the original fuel pumps…?

re: the “firing capacitors;” I am not familiar with these. these two engines came stock with thunderbolt ignition in ‘89… would these engines have them? also, is there a way to test them before replacing them?

thanks again!
interesting on the carbon build up. we do use it for trolling a lot - however, it is almost always preceded and followed by a good 1/2 hour to 2 hour run. also on our way up to the island it’s a good 8 hour run, before trolling for the week and running back another 8 hrs.

is that enough running to prevent build up?

while running, the engines run about 160 degrees. while trolling closer to 135 (per the gauges.) I think i will try what you mentioned…

MARCELINO

Tina asked:


We have changed the fuel pump four times this year. It does not hold it’s 60 PSI, it slowly drops. The relay was changed with the last fuel pump change. It ran OK for a while. Now when the car is cold the fuel pump will not work (no sound at all). Once it warms up the car will start but slowly looses its psi. The fuel pressure regulator was also changed. It slowed down how much pressure was lost but did not stop the loss of psi. Where do I go from here. Any solutions or suggestions? I also have a problem with coolant loss. I don’t know if it is somehow related or doesn’t matter at all. The leak is slow and I have not been able to find out where it is. I have to put more water/coolant in every couple of weeks other wise I have no heat. Any in put would be appreciated. Thank you, Tina

JASPER

thebadguy1980 asked:


I had my water pump, brakes flushed and fuel filter replaced at a Ford dealership recently and it cost me $460. They told me I was going to need new intake gaskets because my old ones are “seaping”. They estimate that at around $400. I called Buffalo Tire and Auto and they said that it would only arround $250. Now I think I got ripped off on the water pump, brake flushing and fuel filter.

JESUS