View Full Version : Rough engine start

07-29-2004, 11:01 AM
First, Congratulations on the new site - very well done!

I have a '96 Sammy Duval EFI and I have always been able to start it on the first crank. Recently, cold or warm start it's taken me a few cranks to get it going; sometimes several cranks. Now this seems to be the case all the time. Is there something I can do, e.g., fuel additives or injection cleaner? Any suggestions?

Also, I did notice the other day I have the oil level too high - I changed the oil and it seems this problem began around the same time. Related?


east tx skier
07-31-2004, 12:59 PM
I don't think that a fuel additive is necessarily the answer to your problem. With that being said, I, and others, have had good experiences with Sea Foam, available at NAPA auto parts for about $6.

07-31-2004, 01:38 PM
High level isn't a good thing- get it back down to where it should be.

08-06-2004, 01:50 PM
Thanks for the advice

betsy&david Harrison
08-11-2004, 03:18 PM
Ok boys. see if you can figure this one out. We replaced the carb on our boat last year because it wouldn't fire after we'd been skiing. When we first launch it, it fires up. Ski a few rides just fine. Dock it...try to start it...crank...crank...crank and then starts. Putt out to take off area and going around the island it sputters like it's gonna die and then kicks in. After that it is a-o-k. Go figure??? Betsy

08-12-2004, 06:51 AM
That sounds electical to me... as in - something is getting hot then not working. Have you replaced your coil lately? When was the last time you replace plugs, wire, cap & rotor? I'd start there - but then again... I'm no mechanic.


betsy&david Harrison
08-12-2004, 11:33 AM
jimmer..we replace that stuff every year. My hub. is great on maintenence issues. It really just acts up from hot to cold. Didn't do it right after we had the carb replaced. We are thinking of going to EFI next to be rid of the problem. B

east tx skier
08-12-2004, 11:51 AM
Betsy, are there two fuel lines going to your carb? If so, it's a Holley 4010. They are terrible carbs, and were, unfortunately, OEM on your 93 Prostar. PCM recalled them on the Nautiques of the era and put the older style 4160 back on; Indmar said it wasn't a problem.

After battling problems like you described (almost exactly) with my Carb for a year, and having no luck with a rebuild, I bought a 4160 from skidim and had it installed. Zero hot stall problems. Zero idle problems. Zero problems. No loss of horsepower (actually getting more speed with lower revs now). Hole shot is a little less instantaneous, but irrelevant from the skier's point of view. Not worse, just different. I highly recommend the 4160 as a much less expensive alternative to fuel injecting a carbed engine.