Vehicle won’t start after a deep freeze with temps in the single digits.

Gmolds66

I'd rather be flying!
Joined
Nov 6, 2010
Messages
89
Points
8
Make
Ford
Model
F150 2wd
Year
2003
Miles
114k
Engine
5.4 L CNG
Hello everyone,
I’m back once again with a new problem. I have a CNG truck that won’t start. It cranks but won’t turn over. The battery is fully charged and when I spray starting fluid in the intake it runs until the starting fluid is consumed. I did check the fuse for the fuel relay and it’s ok.

I think that the fuel system might have ice in it preventing fuel flow based on some on line info that I found but I’m not sure. Since the components on this system are different as compared to a gasoline fuel system I’m hesitant to work on it.

Any help with suggestions of things to check and or do would be greatly appreciated. Thanks!
 

grcauto

wrench
Joined
May 29, 2014
Messages
1,252
Points
48
More than likely if they have a problem with icing it'll be in one or two specific areas. One area that is always suspect in gas is the filter. Not that it's plugged but due to it being a large pond in the river (fuel line) and water will accumulate there. Also at elbows in the pluming.
 

Gmolds66

I'd rather be flying!
Joined
Nov 6, 2010
Messages
89
Points
8
Thanks for the suggestions, I will look further into those areas as a future preventative maintenance measure. Hopefully the slightly warmer temperatures (47 degrees on Thursday) here on the east coast will be enough to thaw the system. Thanks again!
 

Mikerizer

Hero Member
Joined
Dec 13, 2006
Messages
325
Points
18
Location
Jackson MS
Website
www.batauto.com
I had a truck that no matter what I did, it was very difficult to start in cold weather...to the point that I once thought it had jumped timing. I started putting a bottle of HEET in it with every fill-up, and that solved my problem. Like grcauto suggests, my problem was water/ice in the fuel system.
 
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