ROUGH RUNNING MARINER

fish52 · #1 July 23rd, 2002, 02:50 PM

I HAVE A 1989 40HP MARINER THAT HAS AN ENGINE MISS WHILE TROLLING AT SLOW SPEEDS OK WHEN GOING FASTER HAVE HAD CARBS OVERHAULED AND NEW SPARKPLUGS INSTALLED HAVE BEEN TOLD THIS IS TYPICAL FOR THIS MOTOR ALSO HAS AUTO BLEND OIL INJECTION IS THAT ANY GOOD?

orca · #2 July 24th, 2002, 03:58 AM

G'day. No motor should miss at idle. I need more info on the motor. Model No.Etc. If it is badged Yamaha It may have a head gasket problem.

As far as the autoblend is concerned, ditch it and mix your fuel 50:1

fish52 · #3 July 24th, 2002, 06:10 AM

MODLE NUMBER IS 40ELTO SERIAL NUMBER IS 501335 IT HAS TWO CYL AND TWO CARBS I DO NOT BELIEVE IT IS A YAMAHA BADGE THANKS FOR HELP