1989 Wellcraft 5.7L Was running......NOT NOW HELP GUYS

[NHGuy]

Re: 1989 Wellcraft 5.7L Was running......NOT NOW HELP GUYS

Yup 8 degrees btdc.

 

[howe719]

Re: 1989 Wellcraft 5.7L Was running......NOT NOW HELP GUYS

Ok guys I will adjust to 8 btdc AT idle.

Thanks again

 

[howe719]

Re: 1989 Wellcraft 5.7L Was running......NOT NOW HELP GUYS

anyone have an idea what that pink with blue tracer wire is for???? I tried to find some wiring diagrams but nothing I find helps.

 

[achris]

Re: 1989 Wellcraft 5.7L Was running......NOT NOW HELP GUYS

Ok... Just joined this thread, and I see a few things I think I can comment on.

1. First video. That engine sounded very much like it has a couple of stuck valves. Given that it sat over winter, I wouldn't be at all surprised. That would also explain the back-fire through the carb.
2. You turned the engine over until you had #1 at TDC, then found the rotor pointing at #6. To me, if you haven't moved the distributor since the engine last ran, your on the TDC firing stroke of #6, and the TDC exhaust stroke of #1... I wouldn't be moving that distributor anywhere....
3. The Tan/blue wire is the alarm system. It will have power on it when you turn the key ON. It should be connected to a switch (oil pressure, water temperature or gear oil monitor bottle) which will ground the wire (and fire the alarm) when a fault condition occurs. DO NOT connect it to any post on the distributor... It's the correct wiring for one of the distributor posts to have one wire (wht/red) and the other to have 2 wires (both wht/grn)....

Chris.......

 

[howe719]

Re: 1989 Wellcraft 5.7L Was running......NOT NOW HELP GUYS

Ok......... Little upset. Took it out on the water today for a test run. Started up. Pull out from dock and when I opened it up full throttle. Very very slow. NO power. Could not even get up on plane. So I just went back to the dock at pretty much idle speed.

I am thinking again carb or timing. No sure. HELP. Could I have it timed wrong? I put 1 at TDc and then made sure the distributor was hitting the 1 plug. Then I timed it to 8 btdc. That is correct right? Thanks

 

[achris]

Re: 1989 Wellcraft 5.7L Was running......NOT NOW HELP GUYS

Check plug wires and make sure they are on the right plugs. Then check them again.

 

[Eric 3.7LX Alpha 1]

Re: 1989 Wellcraft 5.7L Was running......NOT NOW HELP GUYS

 

[howe719]

Re: 1989 Wellcraft 5.7L Was running......NOT NOW HELP GUYS

I checked the plug wires three times. Still same problem. What else?

 

[flipbro]

Re: 1989 Wellcraft 5.7L Was running......NOT NOW HELP GUYS

I checked the plug wires three times. Still same problem. What else?

I once had a 898 (305) that had back firing through the carb and no power tried many things tune up timing ect turned out it was a couple lobes on the cam were rounded. I replaced the cam set the lash and all was good run it 4 another couple years Just a thought!

 

[howe719]

Re: 1989 Wellcraft 5.7L Was running......NOT NOW HELP GUYS

Ok so I know the problem. Did a compression test and cylinder 1 , 185. 3, 185. 5, 185 and 7, 179. Odds good

Even. 2, 0 4, 0. 6, 25, and 8, 0 psi

My left even side is getting pulled tomorrow when I get home and will send away for test.

Report back once back on


Thanks

 

[dingdongs]

Re: 1989 Wellcraft 5.7L Was running......NOT NOW HELP GUYS

sounds as if the valves had seized in the valve stems and possibly on cranking the engine may now have a set of bent valves.undo all rockers and all the valve tops should be level as the cam will not be depressing them via the rockers once removed.

 

[howe719]

Re: 1989 Wellcraft 5.7L Was running......NOT NOW HELP GUYS

removed the head. everything looks to be pretty good. I am taking the head to the machine shop tomorrow. will report back the findings.

 

[howe719]

Re: 1989 Wellcraft 5.7L Was running......NOT NOW HELP GUYS

head was in good shape. the valves were ok as well but I had them replace them anyway. I put the head back on and re set ALL the rocker arms. That was the problem from the start. I had the Valves TOO TIGHT. after I did the first head gasket replacement last year I never did the valves correctly. I had them to tight on the odd side. Now that she is all back together she starts right up and runs great.


thanks guys