speed boat plz help! - Snowmobile Forum: Your #1 Snowmobile Forum

brian102 · 07-09-2005, 08:41 PM

ok this only happens when the motor is hot and has been running for a lil while, when we are idling, then you go to take off, it will sometimes stall out like its starving for gas, one guy said it might be the accelerator pump, dont know if that would do that, weve tried cleaning out the carb, and we have tried adjusting them to, any ideas! plz help

PolarisINDY500 · 07-09-2005, 10:28 PM

our boat has a carb and every once in a while it happens to us when you stomp on it when your trying to get a skiier out of the water.

clean out your fuel filter...or check your plugs. mybe they've got crap on them and your not gettin a good enough spark when you get on it...thats my only suggestion

ITriumph · 07-10-2005, 12:10 AM

might want to throw some dry gas in also. Could be water in the gas also. Just a thought.

brian102 · 07-10-2005, 09:22 AM

thanks much! i know its not dry gas, cause this is always happen even with new full tanks, but ill look at the filter and plugs, thanks when it happens when u gun it to get a skier out, thanks much!

brian102 · 07-10-2005, 05:50 PM

i guess we are going to get a new fuel filter, and put new plugs in that, ill let ya know in a couple days if that works

IndianRvrShiver · 07-10-2005, 07:25 PM

What kind of engine? Outboard, inboard or I/O?? I would be checking different issues depending on the type of motor.

brian102 · 07-10-2005, 09:32 PM

IndianRvrShiver · 07-11-2005, 11:27 AM

First thing I would do..........swap plugs if not done in awhile.
Check the point gap inside the distributor. If they are closing up due to wear on the distributor cam follower, it will cause a rough idle. I think for most Chevy marine engines the gap should be .019 with the points at the max opening on the dist cam. Check your rotor & cap for cracks or arcing while you're in there.

I actually had my boat quit on me a couple months back. The dist cam follower wore enough where the point gap went to zero. Luckily, I had the right tools to fix it on the spot to get it running & get my butt back home. Next stop was to buy a new set of points & condensor. Runs great, now!!

brian102 · 07-11-2005, 07:02 PM

what year was ur boat this is a 88 its a 4.3 litre v6 wats urs?

IndianRvrShiver · 07-12-2005, 06:17 AM

Yup, same engine as yours only 2 years newer!! I have the OMC Cobra outdrive.

brian102 · 07-12-2005, 05:12 PM

well we tried going out today, i got up first time on skis

first time ever woot! it was fun, the boat still wants to stall if u get on it so plugs and fuel filter didnt do it, next we are going to try new points ill keep ya posted.!

IndianRvrShiver · 07-12-2005, 07:54 PM

Which fuel filter did you replace?? There is a screw-on one (similar to a car oil filter) on the lower left front of the engine; this, I believe also acts as a water separator. There may also be one behind the fuel inlet to the carb; check that if you haven't already.

You should also check the carb accelerator pump.....do this by removing the flame arrestor/air cleaner & have someone open & close the throttle lever while you look down into the carb (engine off, of course!!). You should be able to see 2 good squirts of fuel; 1 into each venturi above the throttle plates. Those "pump shots" are what give the engine the needed extra fuel for hard acceleration from a stop. If they look weak, then investigate the accelerator pump on the carb.

Let us know how that works out!!

BTW - Congrats on getting up on the skis. Won't be long before you'll be dropping one....keep practicing!!

brian102 · 07-19-2005, 08:05 PM

thanks, we did change the fuel filter the screw on can deal, (water seperator) and checked the other 1 and it looked fine, we will look at the acc. pump cause thats what some one else told us it was, let ya know, oh btw we are putting new points in the boat soon to, so ill keep ya posted

PolarisINDY500 · 07-20-2005, 07:38 AM

your taking to much time to fix that bad boy! get it done so you can get back out on the water

brian102 · 07-26-2005, 08:29 PM

hehe yeah its taking forever it seems, atleast we have a pontoon we can take out to,plus i get to go over to my sis like every week and tub and stuff

skidoo_magoo · 07-26-2005, 09:14 PM

what does i/o mean?

**smallengineguy** · 07-26-2005, 09:50 PM

inboard/outboard. The engine is inside the boat, but the driveline/trim controls, etc are outside.

skidoo_magoo · 07-26-2005, 09:53 PM

thought it was that, but didnt know how it would work.