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1989 4.3 Cobra

Discussion Forum at MarineEngine.com » OMC Sterndrive and Inboard » 1989 4.3 Cobra « Previous Next »

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Andy
New member
Username: sproat330

Post Number: 1
Registered: 07-2007
Posted on Wednesday, July 25, 2007 - 07:08 pm:   Edit Post Delete Post View Post/Check IP

We had a cracked head on our boat and made the necessary repairs, but now the boat wont start. It is turning over, but wont fire up. We are getting spark so we are thinking the timing is off, please help.
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chris frieders
Member
Username: chris_f

Post Number: 35
Registered: 08-2006
Posted on Thursday, July 26, 2007 - 12:47 pm:   Edit Post Delete Post View Post/Check IP

Andy- Distributor will only seat in two positions. If it is off by 180 degrees a quick way to fix is to crank engine until timing mark on crank pully lines up with 0 on timing mark. At this point you are either TDC #1 or 180 degrees from TDC. Then check and mark where the rotor on the distributor is pointing to. Slowly pull out the distributor, the rotor will turn as the distributor gears un-mesh. With distributor out, rotate rotor 180 degrees from where you marked it before you pulled distributor out. Replace distributor and try starting.
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Andy
New member
Username: sproat330

Post Number: 2
Registered: 07-2007
Posted on Friday, July 27, 2007 - 08:07 pm:   Edit Post Delete Post View Post/Check IP

We tried turning the distributor 180 deg. and still haven't had any luck.
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zachariah munton
Member
Username: zaks90v8

Post Number: 6
Registered: 06-2007
Posted on Wednesday, August 01, 2007 - 09:25 pm:   Edit Post Delete Post View Post/Check IP

fisrts determind what srtoke your engine is on pull the #1 plug hand crank till you fell the compression sroke and turn it till tdc on timing mark and then pull the cap off dist and see if its pointing to the wire that goes to the #1 plug /the one you pulled then tighten everything down and try to start it should start if not turn the distributer a little each way untill it starts and then use a timing light and set the timing
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Denny White
New member
Username: denny_extr

Post Number: 3
Registered: 08-2007
Posted on Monday, August 27, 2007 - 04:46 pm:   Edit Post Delete Post View Post/Check IP

I had just about the same problem. Turned out the every spark plug went bad except two, wich allowed it to fire but ran like crap.
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kevin walker
New member
Username: walker

Post Number: 2
Registered: 03-2008
Posted on Monday, April 21, 2008 - 10:41 am:   Edit Post Delete Post View Post/Check IP

I have 1989 sunbird 195-bow rider. The trailer is in bad shape I need to repair the crossbars. Can you pull the boat off the trailer in the yard on to blocks so I can get it repaird.its going to take some time and I cant afford doc storage and how hard is it to do?
thanks
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kevin walker
New member
Username: walker

Post Number: 3
Registered: 03-2008
Posted on Monday, April 21, 2008 - 10:16 pm:   Edit Post Delete Post View Post/Check IP

I have 20"1989 sunbird 195-bow rider i need to repair or buy a new one.if i was to buy what type of tralier do i buy it has a roller trailer now but will a bunk trailer work and how do i know it for a v bottom.heres a trailer i was looking at will this type work sorry iam new at this. thanks walker boat trailer

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