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    Tune up worked! Finally some results 88 OMC 4.3

    I finally got to work and with the help of my Pop, performed a complete, proper tune up. She runs great now, new points,condenser,rotor,cap, wires, and plugs. Checked dwell and timing which was right on. I went through the gas system first, doing a carb rebuild, checking antisiphon, fuel pump...
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    Gas tank ? Memories of my childhood, Interesting!!!

    Okay everyone, I think I am going to stop looking at fuel as my problem. Everything fuel related has looked super clean like the carb, when I done the rebuild, if it wasn't for me needing a couple of gaskets from the kit, I probably wouldn't have performed the rebuild but I did and all the...
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    Unusual Mod# 1988 OMC 4.3ltr unrecognized model number?

    Hi All, Yes I am in need of allot of advice lately. The model number on my boat is 432APRGDA which has confused a local marina. I have an original OMC service manual pn 507708 and it does not list this model, the last letter should be a P or E by the book, I am sure I have double checked this...
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    Two issues 88 OMC 4.3ltr V6 cable adj. and antisiphon valve. Please

    If your are reading this Thanks. I found my antisiphon valve, it was going into a 90 degree fitting on top of the tank. I removed it and inspected it, looks super clean, blew into it from the tank end and it took a moderate amount of pressure to open, seemed okay and wouldn't allow gas to flow...
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    What is the P/N for the manual I need?

    Does anyone know what the OMC part number is for the OMC service manual I need for my 1988 4.3 litre GM V-6 engine and cobra drive?
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    Compression Results and Plug condition?

    I have a 1988 Sunbird Corsiar with a GM 4.3ltr V6 and OMC cobra drive. I removed the plugs, the number one had something wet on it but they all looked good. Compression was 160 to 170 without putting any oil in cylinder. Is that good? I am trying different things because my engine is running...
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    Where is my antisiphon valve? Please?

    I removed all panels to see my gas tank. It is plastic,20 gallons. On the top there is a rectangle held down with phillips and inside that are the wires to dash, an 90% hose fitting from the fuel/water sep., and what looks like a plug. Ofcourse on the other end is the fuel inlet line and vent...
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    Tried several sugestions, need more please,1988 4.3 GM V6 OMC

    I have a 1988 sunbird corsair which used to run great. The last four trips not great. First signs of trouble the boat would stumble when I first took off then it would barely get on plane running real bad but shooting forward like it used to run for only seconds at a time. I found my...
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    Soft spots in floor 1988 walkthrough

    I have a 1988 sunbird corsair and I have noticed atleast two soft areas in the floor. I thought after summer I would remove the carpet and have a look. What's under there, fiberglass over wood? I have new bench seats to install and a roll of carpet. Can I cut out plywood and put it down then...
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    Need advice removing choke plate. Please

    I am trying to remove the thermostat from my choke, the black composite plate with the three screws and retainers around it. Is it just stuck and what is a good way to remove it without further damage. When I inserted my screwdriver into the flat head on the face it chipped out. I have tapped on...
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    Carb rebuild advice OMC Rochester 2brl

    Hello, I have a 1988 sunbird with a 4.3ltr GM motor and omc cobra drive. It used to run great. Now it will barely plane occasionally shooting forward running like it used to for just seconds. I checked all electrical parts, okay. I done a fuel pump volume test, okay. The boat had sit for a...
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    Water in my boat,why?

    I have a 1988 Sunbird 4.3ltr with cobra drive. Every time I pull it out of the lake and pull the plug there is a considerable amount of water which flows out. It didnt come over the edge.No leaks under the hood,hoses,clamps etc. I repaired a busted oil cooler recently,nearly impossible to...
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    Where to purchase carb rebuild kit??

    I have a GM 4.3 V6 on a 1988 Sunbird OMC Cobra.Should I buy a carb rebuild kit from an OMC dealer or can I purchase from an auto parts store? Also, I have a rear mounted gas tank and the line goes through the bilge then up to the pump. If I remove the line from the pump and hold it down in the...
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    4.3 GM 1988 omc cobra running bad,HELP.

    My boat which usually ran very well has been stored for a couple years.Last month I took it out after changing fluids and installing a new impellar. It ran poorly like it was running on 4 or 5 cylinders but it would occasionally shoot forward and run good only for seconds though. I noticed that...
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    4.3 GM OMC 1988 Sunbird Corsair Thermostat?

    Trying to inspect my thermostat I removed the two bolts holding down the housing to find the spring side sticking down, the spring was hanging off only being held down by one keeper arm.I cant see how I can change the unit,seems to be self contained?Is it just frozen in place by rust?Do I have...
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