Fuel pressure is 65 psi when cranking. Replaced icm and coil, nothing. Put old coil and icm back on and it started, ran for a day then next day won't start. Replaced cap and rotor also. Crank sensor plug looks good also.
If i am not mistaking sometimes the oil pressure switch will disable the motor look to replace this some engines have two one for the gauge and one for the PCM/ECM
So do you know for a fact you don't have spark when it fails to start ? ?
And do you know for sure that the injector has power and a ground signal ?
Will it try to start if you spray cleaner into the throttle body even with normal fuel pressure ?
Since you have a distributor, you have an ign control module, but you also have a pickup coil which may be in the bottom of the dist.
Could be a problem with one of the connectors too.
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no shop can fix it>??????? 5.9L gas.
cranks fast but no start has 50 causes (engine parts all+ EFI parts all)
a shop or tech does tests to do with tools .
if IAC is stuck close using 5% right foot throttle actions replace dead IAC lost air flow. so starts.
no need to buy IAC ever, seen right foot fail.
if it cranks fast why a new battery and alternator>?
300rpm is cranking speed, and is all you need
if battery stays above 10vdc (11 is par) the engine and EFI starts the engine.
compression tests pass on this old truck.
i WILL NOT GUESS FOR YOU. JUST TESTING
my list, (using real tools owned or borrowed)
IN ORDER (1,2,3 BAD ENGINE/SPARK/FUEL)
ALL FUSE TEST GOOD
SCAN PCM OBD2 PORT CRANKING NOW DTC'S POP UP.????????
26YEAR OLD ENGINES.
150PSI or more on all cylinders.??? NEAR EQUAL
DONE WOT WIDE OPEN THROTTLE.
NEXT.
SPARK TESTS GOOD AT ALL SPARK PLUGS.
NOT JUST 1, IF ALL DEAD CHECK COIL HV LUG NEXT FOR SPARK.
IF DEAD ICM DEAD?
I HAVE A TIMING LIGHT AND #1 FLASHES NEAR TDC MARK SO CAM OR DISTRIBUTOR TIMED RIGHT..
EVER TRY NEW SPARK PLUGS FIRST , CAP AND ROTOR OR ICM IF MAIN IGN COIL IS DEAD.
OK SPARK IS GOOD, AND SO IS ENGINE
NEXT IS FUEL,
WE NOW TRY TEST FUEL CALLED INSTANT SPRAY START IN A CAN. SOLD AT WALMART EVEN.
I SPRAY IT IN THE IAC HOLE OR AIR CLEANER PULLED AN SPRAY FOR 3 SECONDS THERE.
IN THAT HUGE AIR INDUCTION HOSE.
IT RUNS THE ENGINE FOR 3 SECONDS EACH TRY.
AND ENGINE SOUNDS GREAT.
MUST.
IF YOU GET THIS FAR OUT COMES FUEL PRESSURE GAUGE (HAND TOOLS)
CHECKING PRESSURE ONLY CRANKING A 2 MAN JOB. FOR SPEC. psi pressure
dribble test only finds dead pumps never bad FPR
ask scotty this, 5 million have.
keep in mind time limits then on videos
doing fuel tests is a 30min video alone,
leak down tests, injector balance test and FPR tested
cranking and idle and WOT. 3 tests.
When you say you have fuel, do you have normal fuel pressure at the injectors ? Because Honda cars are known for faulty fuel pump relays.
The relay stops powering the pump when it gets hot but will start back up when the relay cools off.
This is a long shot, but maybe the fuel pump relay or pump is shutting down when it gets hot. It sounds like a fuel problem to me. Good-Day! Hope this helps! also check and or replace fuel filter, and air filter.
Does it try to start by using starting fluid in the intake ? I'm fairly sure fuel pressure should be 55-65 psi so 50 may be low. Do you loose spark as the engine is cranking ? Any trouble codes stored in the computer ?
Your fuel filter may be at it's life time and will need to be replaced. Start with the simple and replace that, the other thing also that would cause the engine to shut down would be a faulty oil pressure sending unit. What is the oil pressure on the dash when the engine shuts down. You need at least 8 PSI to have the engine stay running. Check your Fuel pressure at the shredder valve and you should be 62-65 PSI with the engine not running and fuel system energized, once the engine is running it should drop about 5PSI. The last thing that could cause this would be a bad ICM, once the ignition system heats up the ICM fails and the engine shuts down. A mentioned, start with the simple and replace the fuel filter and check your fuel pressure to ensure your fuel Sending unit has not gone bad and will need to be replaced. Good luck and keep me posted.
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