1993 Four Winns Engine Problem

[Dick in NH]

I own a 1993 Four Winns equipped with a Ford 302 HO with multi port fuel injection and Cobra outdrive. Boat has been in storage for six years and was properly winterized. Before trying to start the engine I removed the little fuel it had in the tank and replaced the fuel filter. When I went to start the engine it only ran for about a minute and shut down. Thought I had bad fuel injectors because the boat sat in storage for such a long time. Had the injectors rebuilt. Engine will not start in the idle position but will if the throttle is almost wide open. Checked engine with scanner and came up with codes ( 23 & 53 ) for throttle position sensor. ( High voltage/ out of range ) Replaced TPS. No improvement. When the engine is running it sounds like it is running on all cylinders without misfiring so I don't think I have a ignition problem. What is strange is it seems that the engine is getting way too much fuel because of the large amount of white smoke coming from the exhaust. Other items I checked was engine compression, replaced spark plugs, checked ignition coil, thick film ignition module, MAP sensor, air charge sensor. All checked out OK. I read through a lot of old post but didn't find anything quite like this problem. Any suggestions would be greatly appreacated.

 

[Levinz11]

Re: 1993 Four Winns Engine Problem

White smoke? How's the compression?

 

[Walt T]

Re: 1993 Four Winns Engine Problem

White smoke is oil. If it's steam then it's water. You DID lubricate that engine by spinning the oil pump and squirting oil in the cylinders... right? If not well it may have broken a ring. Compression test, like Levinz said.

 

[Dick in NH]

Four Winns Engine Problem Solved

Four Winns Engine Problem Solved

A while back I posted a thread about a 1993 Four Winns that had a engine problem. The only way I could get it started was at WOT. The engine would start, run very rough and smoke like crazy. Checked all the engine sensors, fuel pumps, injectors, spark plugs etc. No luck. I called a local Four Winns mariner and spoke to one of the mechanics. Explained the problem and his reply was to take the vapor seperator apart because I most likely had a stuck float & needle assembly. His advise was spot on, that is exactly what it was. Purchased a Volvo/ Penta sealing kit ( part # 3850374 ) Parts are very easy to install and in about one hour the engine was up and running perfectly. Like to give a shout out to John at 3A Marine in Hingham, MA for pointing me in the right direction. Just thought I would pass this info on in case someone else runs into the same problem.

 

[Bondo]

Re: 1993 Four Winns Engine Problem

Ayuh,.... Welcome Aboard,....

No need to start another thread,....

post yer results in the same 1, for closure,...