Why is my car spluttering and stalling in hot weather? - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

DansEdgli · 12-16-2003, 22:21

When the weather gets really hot my car will run fine then out of nowhere lose all power and get all jerky then stall if I dont pull over.
I imagine its the carby. When it happens I try to accelerate and nothing happens, Maybe it isnt getting enough petrol? Then I stop and restart the car and it is sometimes okay or sometimes it will do it again 3 minutes later.

Please help its really annoying having to stop 5 times on the way to work.

Thanks
Dan

brenx · 12-16-2003, 23:23

More than likely the fuel is boiling creating a vapour lock in your fuel line. Fuel boils at about 60deg.

Brenden

ebxr8240 · 12-16-2003, 23:24

Check float height and neddle & seat. and inlet leaks.Auto choke

DansEdgli · 12-16-2003, 23:27

how do i do that on the dreaded thermoquad?

How do i stop it boiling?

brenx · 12-17-2003, 00:14

Quote:

Originally Posted by DansEdgli

How do i stop it boiling?

On the fuel line that passes the extractor put an old piece of heater hose to test it. You could put a viewable filter in the line that way you'll definately know it's fuel boiling.

It's quite common in clevelands for the fuel to boil in hot weather. I had to adjust my idle mixtures to get my 351 to idle in this weather.

Brenden

TTNOS8 · 12-17-2003, 14:42

keep it revving! :D

DansEdgli · 12-17-2003, 21:56

Thats the thing it wont rev. Its like when my mini runs out of petrol cos of the fuel pump immobiliser.

I think brenx has the right idea, I have put in a clear fuel filter so Ill have a look next time it does it.

max_torque · 12-21-2003, 13:02

could be a dirty in-line filter, including the one that goes into the carby.

mines running like a pig now too with alot of run-on when it is really hot.

smciner1 · 12-21-2003, 23:29

As the guys have said, it is more than likely boiling the Fuel in the Line / Carburettor. I had that problem a few Summers ago on my XB. I needed to make a bracket to keep the Fuel Hose away from the Block / Radiator Hose. Fixed it no worries.

9psi EB · 12-22-2003, 00:46

if its running out of fuel while you are driving, it would lean towards blocked needle and seat, or fault with the pump.

Boiling fuel usually only affects restarting when the engine is hot, but seems that you are getting a total loss of fuel.

A pressure gauge would be the 1st step.
Also make sure the tank is venting through the cannister and purge valve, it might be building up pressure.