Who Can Diagnose THIS Total Mystery? Win A Prize?

[JBohannon]

SGWilson, in your original thread you mentioned this "Pulling the choke rod out about two-thirds of the way (flooding it with gas) will cause it to sputter a little less and limp a little farther." This to me is an indicator that it is a fuel problem. Possibly vapor lock. Could you tell us how much longer it runs when you pull the choke rod out? Good Luck. Joe B.

[sgwilson904]

Originally Posted by JBohannon

SGWilson, in your original thread you mentioned this "Pulling the choke rod out about two-thirds of the way (flooding it with gas) will cause it to sputter a little less and limp a little farther." This to me is an indicator that it is a fuel problem. Possibly vapor lock. Could you tell us how much longer it runs when you pull the choke rod out? Good Luck. Joe B.

It never really dies altogether...it just sputters and backfires and loses power. Pulling out the choke floods the carburetor to the extent that it just gives it slightly more power momentarily...

[Tom Wesenberg]

Originally Posted by sgwilson904

It never really dies altogether...it just sputters and backfires and loses power. Pulling out the choke floods the carburetor to the extent that it just gives it slightly more power momentarily...

Did this start all of a sudden, or with the onset of warmer weather?
It does sound like typical ethanol problems on warmer days.

The condenser and coil are often heat related when they fail, but I think you changed both of them.

[sgwilson904]

Originally Posted by Tom Wesenberg

Did this start all of a sudden, or with the onset of warmer weather?
It does sound like typical ethanol problems on warmer days.

The condenser and coil are often heat related when they fail, but I think you changed both of them.

Tom, it started this right after I got it last summer and we all assumed it might be vapor lock or some kind of heat-related issue...but now, even in 60-70 degree temps it STILL does it.

And the really weird thing: even after changing both condenser and coil, it drove just fine (mostly at 45 mph for long stretches punctuated by some stops/starts through small towns for more than 100 miles) before it resumed the same misbehavior when the engine was running at about 170 and air temp around 72.