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    Will switching out 2bbl carb with 4bbl help?

    OMC Cobra MOD# 502aphub ser#T1277370 V8 5.0LHO I got a new block and it has been working great except that it has almost no get up and go. It will reach full rpms but it takes a while. I know I had issues with the carb in the past and it is getting to the point where I can't get the parts for...
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    Marine tex vs fuel question

    I didn't know where to ask this but since it is a tohatsu carb i am working on i figured i would put it here. The main nozzle in the carb broke but in a way that I can marine tex it back together fine. I can't find the nozzle anywhere as it is an ancient engine and would most likely have to...
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    Optical Ignition Question

    Johnson 90hp 4-cyl. j90plee p or R (can't read last letter) I have no spark on all cylinders and everything is diconected at the engine so I am bypassing everything from the helm. I am on the step where you test the yellow/red wire for voltage while cranking and have a couple of questions...
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    Beeping question

    mercruiser 5.0L MPI. (don't have numbers with me right now) I asked a question a few days ago looking for help reading the ddt to help me figure out this buzzing problem but I gave up with the ddt :) I have another way I'm thinking about diagnosing it but am looking for any other ideas, or to...
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    Need help reading ddt

    I have a mercruiser 5.0L MPI bravo. (OM600000-OM614999) There are two beeps going off every minute almost on the minute. The beep starts to go off only after the boat has ran for a few minutes and will continue to go off with the engine off and key in the run position. The engine itself is...
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    Can't find this part number

    Mercruiser 3.0l alpha drive. I don't think serial numbers will be too important for this one but if so I will get them. I have an old style gear lube resevoir that instead of going through the the transom plates and into the drive it goes through just the hull and connects to the drive...
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    Two random cylinders with no spark

    Merc. Black Max 1986. v-6. Not 100% sure of model number but last part of the number is ELPTO. Cylinders number one and four don't have spark. I switched the coils and found out it is not the coils causing the problem but am wondering what would cause two random cylinders to not fire. I'm...
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    chrysler manifold question

    Chrysler v-8. from late 1970s I removed the manifolds, they were done at least once before in the past as the ones that were on were osco. I found that the two rear bolts were broken and even with the block. I can tell that they were broken in the past and not when I was removing them by the...
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    looking to fix oil leak

    yamaha 2-stroke 2003 hpdi 200hp Z200txrz. The top of the oil resevoir is leaking oil when I tilt the engine up. I was wondering if I take the top off and put a bead of rtv silicone on it will it hurt anything. The only thing I am wondering about is if ther is a vent there.
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    Here is a good ignition problem...

    Mercruiser inline 4cyl. 3.7L conventional Ignition. For some reason I only have spark coming out of one post from the distributor cap. Originally I had no spark, then I did a tune up (cap, rotor, points, condensor). Now after doing that I have spark but only out of one post from the cap...
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    Is this engine worth changing?

    Mercruiser 260 v-8. All cylinders are up to about 170 compression except for one which is showing 105. If I put a few squirts of oil in it it gets up to 120-125 so it must be going past the rings. We haven't ran the engine yet in the water and I was wondering before we go through the process...
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    General MPI Question

    I have heard this noise on a few different MPI engines (Merc, Cruisader) and am wondering what it might be as I have one now that is getting very loud. From the throttle body with the engine in gear and under a load there is a loud noise almost like metal vibrating but I know it has something...
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    Volvo Penta drive question

    This number was on top of the drive so maybe it will help with my question...28164530B The reverse lock broke and in turn broke the bracket that holds on the drive. The part is called the suspension fork. The top half of the fork is connected to the water inlet and the bottom half is...
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    TRS Rebuild question

    I just rebuilt the lower half of a Right Hand TRS drive. I used a new pinion gear and a new drive gear as well as some new bearings. Do these new parts have to be broken in some how or can I just go how they are? If they have to be broken in, then how do we do that?
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    Pleasure craft firing order question

    Pleasurecraft, 1987 v-8 carbed. I'm not too familiar with these engines like I am with the mercs and I took the plug wires off to change the plugs but forgot to label the wires. Before I try to start it I would like to make sure I have all the plug wires in the correct spot. The...
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    mercuiser overheat

    Mercruiser gen II. 5.7L carbed. The engine starts to get hot after running for a few minutes at high rpm. As soon as you back off the throttle it instantly cools off. I did the pump impeller in the winter so I didn't think that was the problem. So far we did the following to it but it...
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    Difference between 5.0 and 5.7?

    ive got a v-8 gm merc freshwater cooled. std rotation. tranny. I am going to replace it but am not sure if it is a 5.7L or 5.0L or if it even matters. I know the horsepower is dirrerent but is it different physically as far as everything matching up?
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    setting electric choke on 4 barrel weber

    i am replacing the round part of the electric choke on this 4 barrel weber, the part where the two wires connect. i am wondering how to set this up, do i have to start with the engine cold or hot then put it on and adjust it? please let me know, thanks.
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    runs but no charge

    Johnson J30ECOA, engine runs good but does not charge battery. is there anything other than the stator that can cause this?
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    cylinder head question

    evinrude, 1991 15hp. 2 cylinders model E15REIA. I am planning on removing the head and have two questions, 1) what would the torque spec be for the head bolts? 2) when removing the head do i have to loosen the bolts in any special order like i do when installing the head?
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