1994 polaris slth - PWC Forum: The best hang-out for Personal WaterCraft enthusiasts

finishlne2 · 07-09-2008, 08:29 AM

I have a 1994 polaris that has been acting up for a long time and no shop can seem to get it fixed. It will start and run great but after you run awhile and let it ilde, it will go dead. When you try and restart it, it just turns over but wont start. If you let it sit awhile, like 5 minutes or so, it will start and run great. Yesterday after running it for about 2 hours, it stopped again and still this morning it will not restart. It is driving me crazy. It only has 113 hours on it and has been doing this for the last 5 or 6 years. HELP???

bpann1 · 07-09-2008, 09:50 AM

Woul you check the compression on the cylinders then get back to me.

finishlne2 · 07-09-2008, 10:48 AM

Hey thanks for the response. Right now the polaris is at my sons house 2 hours away but I can tell you that 2 years ago I did a compression test on it and they were almost exactly the same. I dont remember the psi though. At that time I replaced the top cylinder gaskets. I own a auto service center so I have the tools to check those things but dont have the craft here right now. If you dont mind me asking, if the compression was low, wouldnt it run bad or not have much power? Thanks Chris

**JUST-IN-TIME** · 07-09-2008, 08:35 PM

sounds like it is vapor locking

bpann1 · 07-10-2008, 08:19 AM

wouln't a vapor lock be caused by heat? If it had low compression yes performance would drop, but it is not typical to evenly lose compression on all cylinders unless something else is going on.

Could be a vapor lock

stumped on this one

This is one of the reasons they don't make them anymore

**JUST-IN-TIME** · 07-10-2008, 11:37 AM

it could be bad gas

bpann1 · 07-10-2008, 04:02 PM

This is one where you just gotta have it to figure it out