JSM crew is stumped, yes it is true.

Six-is-Enough

Six-is-Enough

Use to do a little Boost
Re: JSM crew is stumped, yes it is true.

bezerk said:
come on ....give us info and a price for the person that had it right:lol:
Click to expand...

I fixed it at lunch today. Started off by swapping #7 & #8 plug wires. #7 has been the problem. Header still got red hot after 5 min of idling.:tdown:

I also noticed that the idle was creeping up to about 2300 as the motor is sealing up. #8 header tube also started to glow red.

So I lowered idle back down to 1100 rpm or so and pretso, red hot header tubes went away.

So I think it was just a quirk in the fuel map at that rpm range with no load on motor for extended period of time getting unburnt fuel into the header tube and combusting there.:2cents:


Who had picked Idle too high?
 
bezerk

bezerk

New member
Re: JSM crew is stumped, yes it is true.

Six-is-Enough said:
I fixed it at lunch today. Started off by swapping #7 & #8 plug wires. #7 has been the problem. Header still got red hot after 5 min of idling.:tdown:

I also noticed that the idle was creeping up to about 2300 as the motor is sealing up. #8 header tube also started to glow red.

So I lowered idle back down to 1100 rpm or so and pretso, red hot header tubes went away.

So I think it was just a quirk in the fuel map at that rpm range with no load on motor for extended period of time getting unburnt fuel into the header tube and combusting there.:2cents:


Who had picked Idle too high?
Click to expand...

i did not, but it was lean ;)
 
Daron

Daron

Active member
Re: JSM crew is stumped, yes it is true.

2kwik4u said:
Not sure what is going on. I can probably spend some time over there though tomorrow. Need to go put a ladder rack on my new van though at some point this weekend. We'll figure it out.
Click to expand...

WTF? New van? You go and get a new van but no SyTy?
 
2

2kwik4u

Resident slow guy
Re: JSM crew is stumped, yes it is true.

Company van....not my choosing, or my expense. I can't beg and choose!
 
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