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  75 etec won't troll without fouling plugs

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Author Topic:   75 etec won't troll without fouling plugs
walleyeman posted 01-20-2008 04:59 PM ET (US)   Profile for walleyeman   Send Email to walleyeman  
I have a 17' crestliner with a 75 etec on it. I troll for walleye in the bay of Quinte in Ontario. After trolling for any extended period of time my etec is fouling plugs. It runs perfect at idle,(700 rpm) but when I go to accelerate to move to a new spot it runs like a piece of crap. Running xd-100. Sometimes when this happens I nurse it along a little and it will start to run o.k. I'm new to this thread and I noticed there was alot of etec info here. If anyone can help me out I would certainly apprecitate it.
jimh posted 01-20-2008 06:22 PM ET (US)     Profile for jimh  Send Email to jimh     
This does not sound like a problem with the boat's electrical system.

This sounds like a problem with the engine's cooling system.

seahorse posted 01-20-2008 06:48 PM ET (US)     Profile for seahorse  Send Email to seahorse     

jimh is correct. It sounds like the thermostat out of spec (or fouled) or abpressure relief valve that is bypassing water and is not warming up the engine. In that case the motor's computer thinks the engine is in warmup mode and is delivering more fuel and spark to the cylinder.

Take it to an authorized dealer who is trained in E-TEC. There is a service bulletin on how to check for correct temperatures on the motor. There is an improved relief valve if that is the culprit.

If you have dealer problems, call customer service at 847-689-7090 and have your serial number handy and explain the problem.

walleyeman posted 01-20-2008 06:53 PM ET (US)     Profile for walleyeman  Send Email to walleyeman     
So you think it is running too hot.
Jefecinco posted 01-20-2008 07:01 PM ET (US)     Profile for Jefecinco  Send Email to Jefecinco     
I believe Seahorse is saying the engine is not getting up to normal operating temperature while you are trolling.


jimh posted 01-20-2008 09:21 PM ET (US)     Profile for jimh  Send Email to jimh     
Since this is not a small boat electrical discussion, please follow up in the MODS/REPAIRS discussion. Thanks.

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