Fouled plugs, stalling '86 Johnson 90hp V4

[gumdogger]

I have a '86 Johnson 90hp V4 VRO. The engine starts and idles fine. In nuetral I can get high RPMs. When I put it in gear, it bogs down and stalls. All four plugs are subsequently fouled. I have replaced the fuel line, fuel pump (VRO is disabled), and plug wires. The fuel tank and filter are ok and running new gas 87oct w/ quality oil at 50:1. The carburator was rebuilt two years ago by my uncle (his first attempt at the procedure, d'oh!). After reading many articles on this sight as well as what I've eliminated with replacements, I believe the problem lies w/ carb., linkage, or an electrical problem (solenoid?). I have the manual but am new to outboard repair. Advise is greatly appreciated.

 

[Hooty]

Re: Fouled plugs, stalling '86 Johnson 90hp V4

Have a look at the needle and seats in those carbs. That's the eaisest place to start.<br /><br />c/6<br /><br />Hooty

 

[elisa191]

Re: Fouled plugs, stalling '86 Johnson 90hp V4

Do yourself a big favor. Take the carbs off the boat and take them in to get rebuilt. I have built hundreds of outboards but it took a long time for me to understand carbs compleatly. You'll save time and money this way.<br /><br />good-luck