In article <b15ab734.0408020619.20579ba7@posting.google.com >,
mbgodfre@rockwellcollins.com (airboatman) wrote:

> I have a honda accord lx 4cyl vtec that has 70k miles. It is missing
> pretty bad. The check engine light is on and flashing sometimes. The
> codes set are 71 (random misfire) and sometimes 72,73,74. I suspected
> ignition so changed in sequence the coil, rotor, distributor cap, plug
> wires, plugs, ICM and then the distributor assembly (with cam position
> sensor) none of the changes made any difference. I have also checked
> valve adjustment, compression and pinched the return fuel line and
> listened for changes. I have listened to the injectors with
> stethescope and they are consistent. I pulled the fuel pump from the
> tank and checked for screen clogged etc. None of the above has led
> anywhere. I don't know what to try next. Help!

It could be a number of different things. If you don't have any equipment
needed to check various things, I advise you to take it to a local
mechanic that you trust. Mechanics will hook up a diagnostic computerized
engine tester to your engine and quickly determine the cause of the
problem.

I once had this problem and eventually took it to a local mechanic that
had a great reputation. He determined that the problem was the spark plug
wire that ran from one spark plug to distributor. He said that it could
have been lots of other things but his computerized tester quickly found
the problem.

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