Discussion:
stalls/hard start when cold

have an lp mazda engine that one day just stalled has become a complete pain to start and keep running when cold. did a tune up but realized its running super rich but once it fires up and you keep on the throttle for a couple minutes it will idle and be fine. having a hard time finding info/parts too
  • Posted 24 Oct 2014 23:24
  • By scott_d
  • joined 24 Oct'14 - 5 messages
  • New Hampshire, United States
Showing items 1 - 4 of 4 results.
This model Yale has the FE engine, model J vaporizer, and CA100 mixer. He said it was running too rich when first started so I would guess the vaporizer's primary valve is shot.
  • Posted 27 Oct 2014 21:49
  • By mrfixit
  • joined 11 Dec'08 - 1,434 messages
  • New York, United States
What's your COMPLETE model AND serial number for this truck?
  • Posted 27 Oct 2014 02:04
  • By kevin_t
  • joined 2 Dec'10 - 1,301 messages
  • Pennsylvania, United States
i'd take a guess that this truck has a UA or UV mazda engine
he did say it was an "LP mazda engine"

The fact that it will start and run after it gets warm gives me the impression that this could be a fuel problem.
It sounds like the vaporizer might be clogged up, possibly the mixer diaphragm, or even a faulty fuel lock valve.

Does this truck by chance have a vacuum operated fuel lock-off filter on it? It would look similar to the vaporizer and have a vacuum line running from it to the base of the carb/mixer.
This component may be clogged up or have a vac leak in the line, this would hinder it opening up correctly causing the hard start condition.

Also what about performance, does it have any power problem symptoms like low power now? stumbling or just won't pull well under a load?
  • Posted 27 Oct 2014 00:34
  • Modified 27 Oct 2014 00:39 by poster
  • By swoop223
  • joined 23 Mar'12 - 3,691 messages
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
Hi Scott,
Can you tell us what fuel this is running on, is it gasoline or LPG,
If it's LPG is it using an Impco system or an Asian system this would be helpfull to know.

Regards Nero
  • Posted 26 Oct 2014 22:18
  • By NER045
  • joined 11 Jan'14 - 137 messages
  • North Yorkshire, United Kingdom

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