Question about 1991 Honda Civic

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Car startts fine. everyday but 1 day it doesn't start but then start

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  • troy burnett
    troy burnett Nov 26, 2013

    Everything's good checked fuel spark goo could it b the starter



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Ever heard of a tune up? every 60kmiles, in your opr. guide, read it.
ok, take the simple test?
1: it cranks robustly (300rpm is good speed)
2: it cranks but dont start (how can this be a bad starter , troy?
my wild guess, is op means #2 and if true.
its a no start engine.
and can be 1 of 3 things.
1: low compression. You never said, starts cold or hot.
some times compression can be very low hot. so...........
a comprssion guage works here and is dirt cheap.. $20
150PSI min warm. or hot.
2: dead or weak spark, on 1 or more cylinders.
cost , one $1.49 new tests spark plug. test all 4 cylinders
oldest test on mother earth for 100years now..... google it.
3: bad fueling. (not my order?) too much or too little.

A: if the sparks tips are soaking in gas with new spark plugs and good fat spark then the engine is flooding
read the opr guide 1 more time it says what to do
you crank at W.0.T. (wide open throttle) this is a magic ECU trick
it cuts all fuel WOT. allowing the injectors to cut fuel and clear said flooding condtion.
ok say the spark tips are dry, bone dry.
you then introduce test fuel. watch scotty do is magic.

(ood related issues)
1: EGR stuck open, clean it, so it can do that , it loves to.
2: iSC stuck closed, (no air to start car)
the opr, guide tells you (suspecting #2) to add 10% gas pedal.
start now every time, bingo malfing ISC.
that dont mean to replace it , it cleans up just like a EGR main valve.
rich boys replace, us sand crabs clean.

Posted on Nov 27, 2013


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