Does anyone know where the engine synchronizer connects to the engine in the 8.1 Mercruiser? The synchronizer manual says it is supposed to go around a spark plug wire however I don't see anything on either engine. There are wires connected properly on the synchronizer side however I can't...
I have not heard they are repairable. From the number on the back of the ECM I can trace the technology such as MEFI-1, MEFI-2 and so on. I have one for sale 12575479 MEFI-4a, however its for a 454 7.4L
This used engine control unit (ECU) was from a 7.4 liter MPI V-8 engine. The original model of the ECU that went bad in this engine was 16237009, MEFI-3. The replacement ECU, offered for sale, is model number 12575479-2 MEFI-4A, which includes the genuine Mercruiser adapter wiring harness and...
We cleaned all the spark plugs on one side of the engine which showed signs of water, tested the exhaust manifold to be sure there was no leak of water into the exhaust, put everything together, started the engine, seemed to run ok. When the exhaust manifold was installed to the block, we...
Don't forget about the simple things. If all the engine components don't have good power, what your describing can happen. From the battery engine electric terminates on back of the starter motor. Measure 12V power around the boat, it should all be the same. Measure at the engine computer...
My boys are out on a trip this week and ran into some problems. They were on a flawless 4 hour trip when they arrived at their destination they noticed a hissing or helicopter like sound from the engine. When they made it to the dock the engine was running rough. Upon trying to restart the...
Has anyone purchased an engine from Small Outboards .com? They also go under the name AFA Marine out of Florida. They seem to have reasonable prices for small motors and great deals from a lease program in Canada. I could only find one favorable review for them, no bad reviews. Has anyone...
When the key is turned to the on position, you will hear 2 beeps indicating the self test from the engine computer is good, the fuel pumps should spin up too, then shut down. The other beeps while the engine is running could be overheating, low drive fluid or low power voltage at the engine...
Just confirm what the actual problem is before replacing parts. Many times parts are replaced and the issue is something else. Prove the issue before spending any more money.