Hello all,
Well I finally started to troubleshoot my 85' Max (29,000 miles) and could use some advice. It was great a year ago when I bought it, now it gradually got to this point. Bike is completely stock except drilled muffs.
I'm getting ready to pull jets and see if they're clear, but that valve and the fact that the #3 exhaust is so much cooler than the others has me a little freaked out. Since I don't have any residual fuel on plugs after shut down, I thought my coils, wires and plugs are good.
If it was my coil not getting enough spark at the higher RPM, wouldnt my plug show signs of being rich?
What does this indicate to some of you out there with experience on these bikes?
What would your next step be?:ummm::confused2:
Thanks
TYBOY
Well I finally started to troubleshoot my 85' Max (29,000 miles) and could use some advice. It was great a year ago when I bought it, now it gradually got to this point. Bike is completely stock except drilled muffs.
- It hesitates at WOT. (when i'm expecting the boost to kick in, hesitates/catches, just not all there consistently).
- It also pops when I decelerate.
- hard to start sometimes.
- The #3 cylinder exhaust at header is almost 100 degrees cooler than others after a ride.
- Runs ok at other RPM's.
- Plugs look normal and show to be firing good. (#3 has black residue on threads near end and lip facing electrode, electrode and insulator clean)
- Pulled #3 plug after ride and it had no residual fuel on it. (did not shut off at WOT and check)
- Could not find any Vacuum leaks.
- Just pulled carbs today, float levels on #3 and #4 are good.
- #3 Cylinder outboard valve has excessive carbon build up (all others spotless).
- Has a fresh fuel filter and fuel pump.
- Fuel tank is not rusted out.
- #3 and #4 bowls looked clean after popping cover today.
I'm getting ready to pull jets and see if they're clear, but that valve and the fact that the #3 exhaust is so much cooler than the others has me a little freaked out. Since I don't have any residual fuel on plugs after shut down, I thought my coils, wires and plugs are good.
If it was my coil not getting enough spark at the higher RPM, wouldnt my plug show signs of being rich?
What does this indicate to some of you out there with experience on these bikes?
What would your next step be?:ummm::confused2:
Thanks
TYBOY