Timing 1978 115 hp Johnson

[cjhols]

I know this is probably way up the garden path. I checked the timing whilst the engine was running at 1500 rpm idel speed. #1 cylinder and the timing was 180 degrees out. Is this because there was no load on it? Or is it really 180 degrees out. I wouldn't have thought the motor would run with this set up? If so could you point me in the right direction of how to alter the timing???
Thanks
Peter

 

[racerone]

??????----------Timing on these motors does not go out of adjustment !!---Review the way you are checking the timing too.--180 out it would not run at all !!!

 

[metriccrescentwrench]

How did you come to the conclusion that the timing was 180 degrees off? Which plug wire did you use with your timing light?

 

[cjhols]

ok. #1 lead ? Is that right?

 

[cjhols]

Top right Cylinder- looking from the back

 

[emdsapmgr]

Most of these older crossflows have two timing mark sets on the flywheel. For #1 and #2 cylinders. The thought is that you check both of them and then adjust the highest-reading one to the factory spec. Such as 28 degrees. The high rpm timing must be set at 4500-5000 rpm's. You can't set it properly at idle.

 

[cjhols]

ok thanks but shouldn't the mark be "in the ball park" ????
I know you are also supposed to set it on load and I can't really get past 3000 rpm before she starts backfiring like crazy.
Thanks
Peter

 

[racerone]

Have you checked the flywheel key ?