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    1991 Force 150 w/Thunderbolt Ignition - Converter box issue

    Hi, I am working a 1991 Force 150 w/ thunderbolt ignition. This particular motor has a converter box that take 12V DC voltage supplied at the starter solenoid and converts it to AC voltage for the switchbox. Can anyone tell me how this unit works internally? I believe that it is killing the...
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    Yamaha 225 hp vmax hpdi 2004 rattling noise

    Hi, I am working on a 2004 225hp vmax hpdi. It has an occasional rattle/clicking noise at idle speeds noticable around the upper port side of the motor around the high pressure fuel pump and #2 cylinder. It is usually only noticable for a couple seconds when you first start the motor after it...
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    Mercury 25 s/n 0T452701 stalling out - have to use primer bulb to keep running

    Hi, I have seen were several people on this forum have had similar problems with Mercury 25 hp 2 strokes having trouble stalling out after several minutes of running unless the primer bulb is pumped. I am having similar problems. I have cleaned and rebuit the carburetor and fuel pump. I...
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    Cooling water question

    I was working on a 4.3L Mercuiser w/ Alpha 1 Drive. The engine gauge is showing 160, but some steam is coming out of the exhaust water discharge. I used a temp gun and the front two cylinders are showing about 205-220 degrees. The thermostat is reading about 160 F. I changed the water pump...
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    1999 Mercruiser 3.0L EST ignition not going into base timing.

    I am working on a 1999 3.0L Mercruiser w/ EST ignition. It had a blown head gasket. I replaced the head gasket and put everything back together. When I started the motor, the timing was very far advanced off the timing marks. I am trying to set the timing. I went through the base timing...
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    Mercury 175 hp EFI stalling out after revving and then dropping back to idle; no load

    Hi, I am working on a 2000 Mercury 175 hp EFI OT154068. The customer put his battery cables on in reverse. I had to replace 3 cdms, the cdm wiring harness, electrical module, and repair the black/yellow wire on his the main harness. The engine is running good in the water under load. The...
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    Calling Johnson experts - Johnson outboard 1996 200 no spark

    I have a 1996 Johnson 200 hp outboard with a no spark condition on all cylinders. I have changed out the stator, timer base, and power pack with all new CDI components. I have about 165 DVA volts on the charge coil (brown leads) loaded and about 170 volts unloaded. I have about 0.6-0.8 DVA...
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    1997 Polaris 900 SL damaging pistons

    I am working on a 1997 Polaris 900 SL. When the PWC arrived to me it had 0 compression in the #1 cylinder. #2 and #3 had about 130 psi. The piston in #1 had a hole in it, that was pitted away. The pistons in #2 and #3 looked fine w/ no pitting. I installed a new piston kit. I went through...
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    2000 Seadoo LRV - electric box problem

    I repaired a 2000 Seadoo LRV a short while ago. I went through all of the manual tests and found that the electric box was bad. I looked to find the cause of it. I did not find any blown fuses in either the electric box or the rear box that contains the starter solenoid & ignition coils. I...
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    1979 Mercury 80 hp starting problem

    Hi, I am working on a 1979 Mercury 80 hp outboard. I am only able to get it started if I fully advance the timing arm on the motor or using the warm up lever (which does the same thing on this motor). At first I thought the problem might be that it did not have the proper fuel mixture when...
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    Mercury 200 hp fuel problems

    Hi, I am working on a 1984 200 hp V-6 Merc. The motor will only get up to about 4400 rpm, when the spec calls for 5300 - 5800 rpms. Compression is 125-130 on all cylinders. The fuel pump is supposed to have up to 5.5 psi at full throttle. I am noticing that the fuel pressure stays between...
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    1998 Kawasaki 750 fuel/starting problems

    I am working on a 1998 Kawasaki 750. It originally would not run. I rebuilt the carbs and changed the spark plugs and got it running good on a flush adapter. I took it out on the water only to find that it was starving for gas. I found that the screens on the fuel lines in the fuel tank...
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    1978 70 hp Evinrude stall when put in gear

    Hi, I have a 1977 Evinrude 70 hp. I recently rebuilt the carbs, flushed fuel line + tank, performed sync and Link, replaced spark plugs, replaced water pump and lower unit oil. The motor runs fine at idle, high speed and in forward/reverse on flush attachment. The motor runs fine in idle in...
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    Sea Doo '97 GTX High Speed Problems

    Hi, I am working on a 1997 SeaDoo GTX with a 787 motor. A friend of mine ran it with the hull plugs in and then left it for a day or so. The motor was partially submerged. I cleared the cylinders of water. I also checked the gas and oil reservoirs and they did not appear to have water in...
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