1986 yamaha 50 not firing

[rcy76]

i have a 1986 yamaha 50 hp that is getting fire to plug #3 all the time plug #2 sometimes plug #1 does not fire at all motor idels good and starts good but when put in to gear it will die or run at idel speed went trough oil injection and carbs everything looks good there does anyone have any clues<br />model# 50etlj serial# 416026 code# 6h5l<br />thanks

 

[Ray Neudecker]

Re: 1986 yamaha 50 not firing

Intermittent fire has been often related to a CDI failure on the three cylinders. These are very pricey and the full range of testing of the other electrical components should be tested before just replacing it.

 

[rcy76]

Re: 1986 yamaha 50 not firing

I CHECKED THE PLUSER COILS OND THE CDI UNIT EVERYTHING SEAMS TO CHECK OUT GOOD I AM THINGKING THAT THE PROB IS IN THE OIL SWITCH ALL LIGHTS INDECATES THAT IT IS WORKING IT IS OILING BUT ACTS LIKE IT HAS BEEN KICKED DOWN FROM WOT TO HALF