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Engine will not start. Trying pull out an injector to check spray volume. Can't seem to get it loose to pull out. Is there some ''trick' to releasing the injector?

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  • rlcampolongo Apr 20, 2009

    Not sure what you mean by "pop test". We have an injector tester that will feed fuel via a hand pump to check the spray pressure and pattern.
    When I turn to loosen the injector, I hear a click noise with a 1/16th turn, but I am not able to pull it out of the head.


  • camp103 May 11, 2010

    Thanks I'll give it a try tomorrow.

  • mdm972 May 11, 2010

    Are you performing a "pop test" on that injector?

  • camp103 May 11, 2010

    The injector is in a Deutz 3 cylinder diesel. Large "jackhammer' type of compressor.

  • JODY BRIDGERS May 11, 2010

    IS THIS A DIESEL JACKHAMMER COMPRESSOR OR A SMALL PORTABLE GAS? INJECTOR?

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IS YOUR TOGGLE SWITCH TO CUT IT ON AND OFF WORKING PROPERLY, ALL YOUR SHUTOFF SENSORS ( LOW OIL,ETC) BYPASSING CORRECTLY DURING STARTUP BY THE BYPASS BUTTON BEING DEPRESSED.
YOU CAN ALSO TRY SOAKING A RAG WITH GASOLINE AND RINGING IT OUT GOOD. NOW HOLD IT OVER THE "MOTOR" INTAKE-HOLD GOOD AND DONT LET GO- AND SEE IF IT WILL START. IT ACTS LIKE ETHER BUT WONT VAPOR LOCK IT. THIS WILL ALSO HELP GET RID OF AIR IN YOUR INJECTION SYSTEM.

Posted on Apr 21, 2009

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I replaced the motor in a 96 isuzu homebre. All the wires are hooked up. The engine will crank but wont start unless either is sprayed into the throttle body. Seems like the injectors aren't working.


first off check that your fuel pump is sending fuel to injection system. Usually there a release valve on the fuel rail somewhere. check it for fuel pressure.

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93 toyota pickup 4x4 it will stay running after I turn it on to start it up, it starts up then after a few seconds it kills


if I'm reading this right...
... the engine starts and dies within a few seconds.
... you jumpered the fuel pump test connector and it will keep running.
... you smell fuel after trying to re-start when it dies.

Disconnect the plug to the cold start injector. Even if you have an issue with the engine running then dying after a few seconds after doing this, if you don't smell fuel after disconnecting the cold start injector and try to restart it, the cold start time injector time switch may be failing.

Buy a can of starting fluid and have someone start the engine then spray short bursts of the fluid around all the intake fittings. If spraying the fluid in any particular area keeps the engine running, I'd start looking for leaks around that area.


It does sound like an AFM or COR issue considering it dies after a few seconds, but the fuel smell when trying to restart the engine may be a separate issue that needs corrected / isolated first.it will keep running.

... you smell fuel after trying to re-start when it dies.


Disconnect the plug to the cold start injector. Even if you have an issue with the engine running then dying after a few seconds after doing this, if you don't smell fuel after disconnecting the cold start injector and try to restart it, the cold start time injector time switch may be failing.


Buy a can of starting fluid and have someone start the engine then spray short bursts of the fluid around all the intake fittings. If spraying the fluid in any particular area keeps the engine running, I'd start looking for leaks around that area.


It does sound like an AFM or COR issue considering it dies after a few seconds, but the fuel smell when trying to restart the engine may be a separate issue that needs corrected / isolated first.

Mar 30, 2013 | Cars & Trucks

1 Answer

1992 isuzu pickup,2.6 engine , surges up and down after 10 minutes then shuts off


1992, PICKUP, in USA? what country , ? cars are not same all over earth. sorry.
engine surges, then stalls. correct.>?

nice testing , rare here, real nice !!!!
spark good as it stalls
so if engine is ok, compression, (seems cat is not melted with 20 " HG)
is flooding or starving for fuel,.
one or the other, you can find that out.
if spark timing was ok, then the belt did not slip. on cam)
leaving only fuel issues.
so DO the magic , WOT, cranking trick this trick (logic in ECU)
cuts the injectors dead, cranked, to unflood all engine with EFI.
do that?
check spark tips, for 3 to 4 hours dead.? be next
2.6L (is 4 cylinder.) is cam belt drive, i never fail to check it first
the fail, at 60k miles, all do. all rubber band engines do.,

if all this is ok, not flooding
one can start engine with test fuel, and even keep it running
even with (hint) fuel pump relay pulled.
if that works, the fueling is wrong.
injectors leaking,? ?
if only one spark tip is wet , soaking in fuel, Injector issues.

when it stalled pull all 4 plugs and look at the tips.
(if cam is timed right) be super super first thing, on this 4 banger.

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1 Answer

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Be sure your fuel filter isnt clogged also check the fueses if both of these are ok check the crank sensor it sends information to the pcm telling it you are trying to start the engine it then sends a signal to the injectors to spray fuel but if the crank sensor is bad then the pcm doesnt know you are trying to start the engine and therefore never sends the signal to the injectors to spray fuel.

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1 Answer

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1 Answer

1990 toyota pickup engine won't start


CHECK THE COLD START INJECTOR ON THE INTAKE MANIFIOLD.
1. UNPLUG THE POWER WIRES TO THE IGNITION COIL(NOT THE HI VOLTAGE WIRE TO THE DISTRIBUTOR)
2, UN BOLT AND PULL OUT THE COLD START INJECTOR(LEAVE IT PLUGED IN TO POWER AND FUEL
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1 Answer

1995 buick lesabre custom. has a new fuel


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1 Answer

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1 Answer

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