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FIXED Starts runs dies then no start

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4 years 3 months ago - 4 years 2 months ago #37206 by albert.strain
FIXED Starts runs dies then no start was created by albert.strain
Have a 1996 ford f150 5.0 automatic 2wh dr dual tank.
Problem is I can start it but it soon dies and wont restart.
After a period of time will restart with repeated result
Suggestions?
Joe
Last edit: 4 years 2 months ago by albert.strain. Reason: FIXED

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4 years 3 months ago - 4 years 3 months ago #37230 by Desmond6004
Replied by Desmond6004 on topic Starts runs dies then no start
Check if you still have spark when it dies. Then check for injection pulse.
It does sound like possibly a blocked CAT, the engine runs for a while, builds up back pressure, then dies and after letting it stand for a while it loses that pressure enough for it to start and run for a few seconds again.
Removing an oxygen sensor and running it like that would confirm it.
Getting involved in discussions because I have a lot to learn still.
Last edit: 4 years 3 months ago by Desmond6004.
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4 years 3 months ago #37234 by Andy.MacFadyen
Replied by Andy.MacFadyen on topic Starts runs dies then no start
Thinking fuel pump is not getting power once the starter is released ?
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)
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4 years 3 months ago #37239 by albert.strain
Replied by albert.strain on topic Starts runs dies then no start
Im still kinda leaning towards fuel.
But im also lookin at the ignition switch
This morning

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4 years 3 months ago #37241 by juergen.scholl
Replied by juergen.scholl on topic Starts runs dies then no start
Check what actually goes missing/cuts out when the engine stalls and move on from there.
An expert is someone who knows each time more on each time less, until he finally knows absolutely everything about absolutely nothing.
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4 years 3 months ago #37264 by albert.strain
Replied by albert.strain on topic Starts runs dies then no start
Well
Ive narrowed some down . Problem is it isnt giving up codes. I am checking ignition switch , pump relay , and tomorrow I plan om lowering tank and going from there.
There is fuel at rail after it dies . Also there is spark. Not sure how much pressure is there .
Also am thinkig of putting in line pump on if i can somehow bypass the FDM
THANKS Joe

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4 years 3 months ago #37265 by albert.strain
Replied by albert.strain on topic Starts runs dies then no start

albert.strain wrote: Well
Ive narrowed some down . Problem is it isnt giving up codes. I am checking ignition switch , pump relay , and tomorrow I plan om lowering tank and going from there.
There is fuel at rail after it dies . Also there is spark. Not sure how much pressure is there .
Also am thinkig of putting in line pump on if i can somehow bypass the FDM
THANKS Joe

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4 years 3 months ago #37267 by albert.strain
Replied by albert.strain on topic Starts runs dies then no start
No it runs fine for quite awhile then dies ,
Mass airflow?

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4 years 3 months ago #37273 by Andy.MacFadyen
Replied by Andy.MacFadyen on topic Starts runs dies then no start
You should be able to read the MAF output with a volt meter but I don't think the MAF is the culprit.

Fuel at the rail isn't a good indicator but pressure is. Without teeing in a gauge a quick and dirty test try introducing propane or carb cleaner into intake as it tries to stall.
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)

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4 years 3 months ago #37300 by albert.strain
Replied by albert.strain on topic Starts runs dies then no start
No
Im sure ive got spark and you can hear both pumps when on.
Front pump is getting pretty loud

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4 years 3 months ago #37505 by albert.strain
Replied by albert.strain on topic Starts runs dies then no start
It runs up to op temp.
Im beginning to think regulator. Checking pressure tommorow.
Used starting fluid and it has spark

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4 years 3 months ago #37519 by Tutti57
Replied by Tutti57 on topic Re:Starts runs dies then no start
When you used the carb cleaner it started back up? If so, you've got some direction!

Nissan Technician

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4 years 3 months ago #37542 by Andy.MacFadyen
Replied by Andy.MacFadyen on topic Starts runs dies then no start
A word of caution starting fluid "Eezistart" is ether on a high compression gasoline engine it will cause the engine to diesel without any spark.
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)
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