Jim_Gruber
Yoda
Offline
As I recounted to many of you I'm still fighting the fuel vs. electrical issues on Bugsy my '68 Sprite with 1098.
Problem began as intermittent missing that would continue to get worse and worse and all of a sudden the engine would simply die. A turn off and tuen on and hte engine would immediately restart and pull strong with no miss. It might runb fine for 5-10 minutes and then the problem would start again.
Trouble shooting so far.
1) Replaced fuel filter ahead of electric fuel pump, no change.
2) Discovered loose wire on 12VDC+ side of the coil. Though that was the issue car ran fine for 2 days and then started acting up again.
3) Suspected coil - Replaced coil - no change
4) Pulled tops of float bowl- both carbs have equal levels of fuel. Supect rubber lines, replace lines, smell fuel, discover gas pouring out of front carb over flow.
5) Pull carb float, clean needle valve seay and blow out with air, reset float between 1/8 - 3/16 gap, closer to 1/8" & reinstall
6)Leak stops but engine really feels like it is way off tune. Drivable but way off power, high speed miss. Idle seems real unever.
Mother's Day weekend no time for doing diagnostics.
7) Start Bugsy to run an errand yesterday. Smell gasoline from underhood after going 1 block. Engine really rough, turn around and return. Pop Bonnet and discover gas pouring out of rear carb. WTF- other than popping the top and making sure no crap in the fuel bowl why is this one suddenly pouring gas out the top i.e. stuck float.
8) I will pull apart this evening and reset float gaps and clean the needle valse seat. Other than the crap that was fouling the front carb possibly migrating to the rear carb, I can't figure out why rear carb is all of a sudden messed up when it has not leaked for 8-9 years of ownership. More front carb either
Plan tomorrow night
1) Stop the fuel leak
2) Change out dizzy to known good mechanical dizzy to make sure not condenser or points issue in dizzy, reset timing and rule out electrical
3) If issue still persists replace fuel pump.
Could a going bad fuel pump all of a sudden be putting out Too much pressure? The mystery continues.
Any other ideas from the list?
Problem began as intermittent missing that would continue to get worse and worse and all of a sudden the engine would simply die. A turn off and tuen on and hte engine would immediately restart and pull strong with no miss. It might runb fine for 5-10 minutes and then the problem would start again.
Trouble shooting so far.
1) Replaced fuel filter ahead of electric fuel pump, no change.
2) Discovered loose wire on 12VDC+ side of the coil. Though that was the issue car ran fine for 2 days and then started acting up again.
3) Suspected coil - Replaced coil - no change
4) Pulled tops of float bowl- both carbs have equal levels of fuel. Supect rubber lines, replace lines, smell fuel, discover gas pouring out of front carb over flow.
5) Pull carb float, clean needle valve seay and blow out with air, reset float between 1/8 - 3/16 gap, closer to 1/8" & reinstall
6)Leak stops but engine really feels like it is way off tune. Drivable but way off power, high speed miss. Idle seems real unever.
Mother's Day weekend no time for doing diagnostics.
7) Start Bugsy to run an errand yesterday. Smell gasoline from underhood after going 1 block. Engine really rough, turn around and return. Pop Bonnet and discover gas pouring out of rear carb. WTF- other than popping the top and making sure no crap in the fuel bowl why is this one suddenly pouring gas out the top i.e. stuck float.
8) I will pull apart this evening and reset float gaps and clean the needle valse seat. Other than the crap that was fouling the front carb possibly migrating to the rear carb, I can't figure out why rear carb is all of a sudden messed up when it has not leaked for 8-9 years of ownership. More front carb either
Plan tomorrow night
1) Stop the fuel leak
2) Change out dizzy to known good mechanical dizzy to make sure not condenser or points issue in dizzy, reset timing and rule out electrical
3) If issue still persists replace fuel pump.
Could a going bad fuel pump all of a sudden be putting out Too much pressure? The mystery continues.
Any other ideas from the list?