I have a 1998 Tige PRE2100 with a closed cooling system. After the engine reaches 170 degrees, the engine tends to stall in idle and low gear. There is no problem with the engine once the boat is moving more than 5 mph. The carb has been rebuilt. The fuel pump has been replaced. But neither fixed the problem. This issue only occurs in the water. Antifreeze was just checked and the level is fine. I am afraid to go back to the Tige dealership because I've spent close to $2,000 trying to fix the problem and they've not figured it out. The dealership wants to take the boat to the local lake and charge me by the hour to trouble shoot. Any help or suggestions would be truly appreciated.
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since it has carb, is the auto choke closing on you? -
Welcome to the site and sorry to see you are having a problem. Post up a picture when you get a chance.
It seems strange to me that your dealer wants to charge you to to troubleshoot, on the water, after you have placed your faith and $$$ with them and they failed to solve your problem.Mike Allen, Tigé owner since 1997Comment
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I'm not sure. How do I tell if the auto choke is closing?Comment
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Sure sounds like an idle carb jet problem to me. I know you say the carb was rebuilt - but by whom? And how thoroughly? I JUST finished debugging something for someone who absolutely guaranteed a "Yes" to my second question. Since they assured me "X" could not be the problem, I trusted them and moved on in my mind... but later evidence started piling up, and when I gently suggested we revisit that topic, sure enough that was the problem! Turned out their definition of "Yes" was different than mine.
"Occurs only in the water" is another clue. An unloaded engine doesn't require much fuel flow to rev up, which means the other carb jets won't be as involved. Put it in the water and try to turn the prop, though (i.e. put a load on the engine), and the engine needs far more fuel to turn the same RPM's. That means secondary carb jets are getting involved, perhaps making up for problems in the idle jet.
Everything in your post screams "idle jet" to me except for "carb has been rebuilt". Unless you did that yourself, AND you made certain to clean the idle jet, that's where I'd start.
Hope this helps!Comment
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Wow. looks in great shape! Thanks for the picture.
Looks like a CA boat with that multi colored stripe on the bimini top.Mike Allen, Tigé owner since 1997Comment
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Ok. How do I clean the idle jet? Is this something that Tige will need to handle?Comment
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That's a good looking boat.
You would need to pull the carb back apart and clean it with spray carb cleaner to ensure all the jets flow un-restricted.
to check the auto choke pull the spark arrester off and see if its closing on you, choke is the top flap on the carb, should be wide open at temp. Or wire it open so it cant close.Comment
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For a quick check on the idle jet, you can pull the spark arrester off and look inside the carb while running at idle. Both barrels should be getting just a little bit of gas coming out of the idle jet. If only 1 side is getting it then the other is clogged or if it doesn't look like equal amounts then one is clogged.Comment
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Cleaning a carb and its jets isn't difficult, just takes some attention to detail. The Internet is packed with written and video tutorials on servicing carbs so no need to repeat all of that here. If you have specific questions, post them and we'll be happy to answer!Comment
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If you find unequal spray in those idle jets, leave it just like that and take it back to your mechanic and show him. Then demand your money back.
Then if you dont want to clean it yourself, find out who the best carb guy is in your town, car or boat, and have him go through it.Comment
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You would expect idle mixture and speed to be set up after the carb was done. Depending on engine model your ignition system could have idle control where it advances and retards spark to control revs. This needs to be disabled to set idle mixture and revs. Idle mixture could be set wrong if mechanic didnt do this. What model engine, carb and ignition does it have? (Im not an expert, just been reading service manual for my 96 pre2000)
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