Cold Weather Stalling

[cary]

The weather up here in Montana has been pretty cold. My son has been driving his 1.7 everyday. Coldest was 30 below zero.
Car runs fine after it gets warmed up. Butttttt........ it stalls after you open up the throttle. Starts fine. The AAR might need a cleaning and oiling. Doesn't seem to last long enough.

He starts to drive off after a 10 minute warm up. It stalls after going about 50 yards. Acts like it isn't getting gas. Then it won't restart and idle. He seems to get it going after 10 minutes of cranking and waiting.

Feels like its icy up. Any way to get around this ?
Injector points look brand new. The MPS works fine in regular weather. Might the cold be causing it problems ? Should I put it in the freezer and do an OHM test ?

[Toast]

What kind of gas and oil are you using?

Are you using for the coldest tempuature type of anitfeeze?
(Just kidding with you on the last one )

[cary]

Highest we have here is 91. That's what he's using.

We're going to 2 cans of heat per tank when the humidity is high and the temp is less than 20. Seemed to help yesterday. We'll see.
I just had the tank out 2 weeks ago. Cleaned up the fresh air blower.

I haven't torn into the air cleaner yet. Looks like there might be some kind of flap right above the nozzle.
Any idea ??

[Scrappy]

According to the Haynes Manual, the 1.7 from Aug '71 to Aug '72 had an air pre-heat system. You might try feeding warm air off one side of your heat exhangers as an experiment, as it doesn't show where they tapped into the warm air.

I can't imagine a D-Jet icing up like a carb would, but are you sure you have no moisture in the fuel or plenum that would form ice.

[Dave at Pelican Parts]

I am not certain that the pre-heat was ever hooked up--I don't think the stock exchangers even have a provision for it.

Check the connections and resistance on the head temp sensor near the #3 spark plug.

--DD

[Scrappy]

Originally posted by Dave at Pelican Parts
I am not certain that the pre-heat was ever hooked up--I don't think the stock exchangers even have a provision for it.

Check the connections and resistance on the head temp sensor near the #3 spark plug.

--DD

Dave, it would be very simple to run from the pass side exchanger and draw air rather than have the blower push air into the cabin as normal. This would give some pre-heat - like I said - as an experiment. The valve is both temp and load sensitive.

[cary]

Good point Dave. Since this car ran like a charm. I didn't do really anything but freshen the plugs.
CHT is a good idea. I'll look at it this weekend.