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    prestolite electronic conversion and origional omc points type tach conflict

    Just changed my omc distributor from points to the prestolite conversion . Now have trouble with the tach signal being for points, it bounces around a lot at low rpm. I am sure someone has had this issue. i purchased a 8910 b tach adapter product, that i was told would work, but the problem is ...
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    Fuel tank anti siphon valve questions

    After solving the wrong carb problem, I find that my fuel pressure is less than 1 lb . I took out the anti siphon valve and replaced with threaded nipple at the gas tank, and low and behold, we now have 3 lbs fuel pressure. Question is, do I replace the anti siphon valve with a new one, or could...
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    NEED A LIST 8007 CARB FOR MY BOAT. HOLLEY 4BBL, 4.3L OMC

    In a post I previously made, I told of a problem with my carb. Found out that I ordered a carb for my boat, but was sent a botched up carb for a car, that had marine J vent tubes put in it to make it look like a marine holley carb, and it was about 150 cfm larger than the correct carb. They...
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    4.3l 91 4bbl holley question

    I have just replaced my holley 4bbl with one from I5 carbs . It runs fine at cruise and midrange.a dead spot on initial acceleration. If I pump the throttle arm, it will accelerate ok. I set the idle and adjusted the floats. I am an old drag racer, so I know my way around carbs. Juat wondered if...
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    OIL PRESSURE CONCERN , AND HORSEPOWER.91 omc cobra 4.3l

    I have rebuilt my 1991 4.3l engine, it has been line bored, balanced, new crank, rods, bearings, oil pump ect. Ran it last summer , break in, was not to concerned, it seemed to show about 35lbs oil pressure , cruising at about 3-4000 rpm, ,I am a certified auto mechanic, most times 20 lbs is...
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    Omc electrical question, low oil pressure alarm or shut off?

    My boat has some wiring issues with a sending unit, from setting in the boat, on the left side, port of the engine, at the back, there is a sending unit with two wire slip connectors that is not hooked up. I need to know what this is, I think it may be a low oil pressure shut off for the fuel...
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    1990 omc cobra shift cable bellows replacement

    I have new bellows, all three, I am having trouble finding out if I can change the shift cable bellows without adjusting the cable. I found out if it is working fine, which it is, it is better to leave it alone, as this is a critical adjustment, and can cause gear failure if done wrong on the...
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    omc fast idle option available?

    1990 omc cobra 4.3 l Guess I am used to the merc setups, so here we go! Is there any control shift set up I could replace mine with, so that I could set up a fast idle from up at the helm like I had with my outboard? Seems like it could be so handy for warm up, instead of the one on the carb...
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    90 cobra 4.3l drive question

    Wow! just read the other clifton's post, have a similar problem. I just put a new engine in my 90 renelle 4.3l. I have a chattering noise in the drive in neutral only. The previous owner had his repairman replace gimble and the bellows . I have this chattering noise , like a dry throwout bearing...
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    1988 vro 140 will not cold start

    I JUST BAUGHT A REBUILT VRO 140 FROM CROWLEY MARINE DENVER.Broke it in, and still IT WILL NOT COLD START unless you decowl and manually choke with red lever.YOU CAN HEAR THE SOLONOID CLICK FROM THE KEY START. Everyone has told me how the choke works, pump up the gas bulb hard, then hold the key...
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    4.3 l water pump rust

    Hi, just replaced both exhaust manifolds in 90 4.3 cobra, now am concerned, is it likely the engine driven water pump, on the front of the engine could be as rusted? only in fresh water, but wow! the port side exhaust manifold had a hole rusted through, so, any thaughts on this? Jack
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    ignition questions 4.3l 199o omc

    Looking at this distributor, it has points, looked up tune up specs in climber manual, two chapters have different tune up specs, one says base timing at idle is 6 deg before tdc, the other says one degree before? prestolite distributor. Also, points are burned, had msd destributor, no resistor...
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    want to replace 1990 4.3omc with 1999 4.3 truck engine

    Realizing that the 99 4.3l has a different block, as per the vortec heads, intake , and the balance shaft. How much difficulty will I have by using the newer engine. I know I will have to hunt up a special intake manifold, and use the dampener that came with the newer engine, will the flywheel...
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    1990 renell 4.3l engine upgrade to newer mod year

    My boat has a bad engine, 4.3l v6. 1990 , can I upgrade to the later mod engine 4.3 with the vortec style, knowing that it has a balance shaft above the cam on later engines, would there be any phisical differences in bolting up and in the configuration? My boat has a 4 barrell holley carb, so...
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    minn kota v2 mounting on closed bow v hull.help

    wondering how and where to mount this motor, I had seen one mounted just in front of the windscreen , not as recomended close to the center line of the of the boat, but practicle since you do have access to the swing mount. Any one tried it, and would it steer at all from there? Jack
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    140 johnson v4 1988 choke problem

    My 140 johnson will not choke , hard start. I can not get the choke to work when holding in on the key as it should. I can choke it by raising the little red lever under the cowl .Can anyone help me find the wiring diagram to the choke from the control handle, color of wire to the harness, any...
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    going to look at 200 exp suzuki engine, gold color, oil injected, need aprox year

    200 Suzuki, limited edition on cowl cover , oil injection, on 1989 vip boat, kinda need to know aprox age of engine before making the two hundred mile trip to check her out. Any experienced advise is appreciated. I am going to check this engine out compression, lower unit, charging sys, ect...
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    Having trouble identifying my supposed 1500 1975

    I look up my sn off of the lower mount bracket, it has sn of a 1975 1500 . Now, when I look up the fuel pump, it has the looks of the 140 hp pump, so that is what I ordered. is there a sn on the engine block, and where would it be. It has thunderbolt ignition. My other question is, could this...
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