L-Jet not idling when HOT, Doesn't like 32C / 90F outside temps Options

[nihil44]

My '74 1.8 normally runs beautifully but with our present 90 degree F ambient temps it runs hot and won't idle.

Temp gauge is just short of the red zone. (Next time I will get NHS to put numbers on the gauges.)

Thermostat works - checked with hot air gun. Flaps are opening

Warm air guides installed

Tried enriching idle mixture by screwing in air bypass screw to max - no effect

Would appreciate help from the brains trust

Thanks

David
Brisbane, Australia

[malcolm2]

I assume you are talking about oil temp. I also assume your temp gauge is the OEM set up at the Taco Plate? There are 4 or 5 different gauges, none have numbers. You can tell the difference by where the RED is. Just curious. You might try to find another way to check the oil temp. Do you have a Laser temp gun?

2ndly it might not have anything to do with temp. Maybe you have a hose off or leaking.

I recently took a 4 hour drive to Memphis. On the way home, as we exited the interstate, I noticed that my 1.8 L-jet was struggling to idle. Once home I found a hose that had split.

L-Jet does not like vacuum leaks and struggles to idle. Not always easy to find cause there are hoses and seals everywhere. As one member suggested recently, start at the intake and work your way to the air filter. At least you would have a system that way.