alley mechanic
Petty Officer 2nd Class
- Joined
- Apr 15, 2011
- Messages
- 100
Hello again, well i keep thinking that i my have solved my problem with my 98 115 intruder after you have brought the engine up to operating temperature and stop and fish for about one hour or so than start it up give it some throttle about 1400 rpms and the motor makes this puff puff sound out of the exaust intermitley, as you keep running at that rpms for about 5 to 8 min it will go away and run like nothing is wrong, ive had this problem since last year cant seem to rectifie it. Heres what ive done so far i tested spark good blue flames tested coils stator . I decide to replace stator reg/rectifier both coils temperture switches optical sensor cleaned and rebuilt carbs new vapor pump and a cdi power pak, well the problem is still there i can even replicate the problem in my horse trough. When i did the carbs i did not pull off the intake manifold to check the recirculation ck valves like the omc manuel said, i have heard that the intake manifolds warp and cause a air leak on this motor , when it heat soaks is it possibe that the manifold is expanding due to the heat and letting air in than when moter runs it starts to cool down to normal temperature and the plastic manifold seals up again engine always starts up good hot or cold wot run 6000 rpms very smooth trollig speed very smooth till you let it heat soak any advice would be very helpfull. Thank you.
Alley mechanic
Alley mechanic