4JB1 Injection Pump Problem

[steve67]

Hi Guys
I have replaced 4JH1 injection pump with used 4JB1 pump.
Engine starts and stops after 2 revolutions restarts straight away
and stops.Shows black smoke on start then smoke diminishes
as engine slows to stop.
I hot wired fuel cut off to eliminate that as a problem.
There are no fuel restrictions in the system.
Where and how do i test pressure from feed pump as i think
the pressure may be low.
Has any one encountered the same problem.
If i didn't have bad luck i would't have any luck at all.
Steve.

[paulthepilot5]

Has this setup been run before without issue or has it just been fitted? Does it have JH1 injectors still?

[steve67]

Thanks for reply
Has 4JBi injectors
Found this morning the throttle leaver has been swapped
by the guy i purchased pump from to use on his vehicle.
There was little or no spring tension to react against governor
even at full throttle if there had been a slight improvement
i would have twigged to the problem earlier.
I hope this can help someone in the future.