Question about 1993 Honda Civic 4 Door
Replaced the fuel pump, main relay and the igniter. have spark, but fuel pump will not come on
Sorry if you guess and guess wrong. really, must be expensive.
ok got spark (and timing is good, timing light test)
if test fuel ( use instant start in a spray can) fails, with spark
then engine is bad, compression is checked, see near 80 not 150+ PSI , the timing belt has slipped. if not changed by the book
they slip and the engine grenades (or bends valves)
this is an interference engine, never ignore the belt.
there is an acid test order.
1 compression good.
2 spark good, and timed
3 fueling is last. (if spark plugs dry add fuel, by hand)
cant burn fuel with no compression and spark. well with EFI it cant run right with bent valves either.
here is Chad running an engine (any) with no gas tank
even his battery is dead. and has external battery. for 12v power.
a real trooper.
ive done this 1000s of times. in 60 years.
his engine only makes 80 psi (old) and still starts.
but EFI will never do that not that low. compression
the cam slips and goes retarded compression drops to near 1/2
and the valve timing is so bad, the exh opens late and pollutes the
next last intake charge. the card house falls and then the valve bend.
take if from me, nostarts are a blessing on any honda
maybe it saved your valves.? do the service on time./
Posted on Dec 29, 2013
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Posted on Jan 02, 2017
normally that happens with a fuel pump going bad or your ignition coil gets to hot n shuts down. when it happens again, take your spark plug wire off, have someone to help you start the car if no spark its gotta be your fuel pump
Posted on Jan 14, 2009
Try pounding on the gas tank with a rubber mallet or similar tool. (careful not to dent the tank) Try starting it. If it runs, replace the fuel pump (it's nfg). I've diagnosed numerous fuel pumps this way. Remember the pump needs to be replaced, if you drive it, you don't know when it'll fail for good. Hope this helps. Please post the results.
Posted on Feb 08, 2009
in the fuse box up by the firewall on the drivers side .... fuse 13 fuel injector relay is the only fuel related fuse/relay that i could locate.fuse 9 in the passenger compartment fuse box as well.... what size motor is in your car ?
Posted on Apr 19, 2009
The PGM Main relay is outboard of the glove box. You can see it if you get the glove box out of the way, but to remove it, you need to pop the triangular shaped plastic trim off of the end of the passenger side of your dash. The relay is held in place with one 10mm bolt and the electrical connector.
Posted on Oct 20, 2009
Fuel pump is in the tank, there may be an access panel under the back seat area. One thing to check is the Main Relay. Ususally up under the dash, Left Dash area, I dont have a diagram, but you will need one to find and verify the relay operation.
Posted on Mar 16, 2010
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