Hello Gents ,

I have been working on a honda civic with a 1.5 engine . I bought the car non running .
Car turns over but no start .No codes being thrown by the ecu , good blue/white spark at the wires and good compression on all cylinders 120 psi + . I have fixed many of these cars with a no spark situation , burnt valves , blown head gasket , but I have never seen one like this yet . I seems to be flooded as all the plugs are wet and there is a lot of fuel in the throlle body/intake area . After looking down the trottlebody while someone cranks the car , the top injector is really gushing the gas in while the lower one is not . Looking down the spark plud holes reveils a lot of fuel on top of the pistons . I assume that the car is fuel logged and just can't start . I left it open to evaporate over night and I assume that I can discopnnect the two injectors to stop the fuel flow enough to get it running . Is this a bad injector or is the ecu telling it to eject fuel when it is not supposed too. What are the diffrences in the upper and lower injectors?? This is a freak problem with this car as I have never seen anything like it . Oh by the way , timing is spot on . Any help will be apprecited

Anybody know this one , any honda techs out there??

Could be a bad fuel pressure regulator, which is attached to the fuel rail.

1. Attach a fuel pressure gauge to the service port of the fuel filter. It should read 40-47 psi, with the fuel pressure regulator vacuum hose disconnected and pinched.

2. Reconnect the vacuum hose to the fuel pressure regulator. Pressure should be 31-38 psi.

3. Check that the fuel pressure rises when the vacuum hose from the fuel pressure regulator is disconnected again. If the fuel pressure did not rise, replace the fuel pressure regulator.

4. Since the engine will not start, turn the ignition switch on, wait for two seconds, turn it off, then back on again and read the fuel pressure.

5. Check for a pinched or clogged fuel return hose or piping.

Hey Txgreasemonkey,

Thanks for the headsup , I assume that you feel that the pressure is too high and the injector can't hold it back , good point , I will check it . I thought maybe a bad injector . What's weird is if I disconnect the both injectors and let it dry out a little , I can't seem to get it to fire , even on starting fliud . It pops out of one cylinder and that's it . I assume though that its so flooded that it will need a little more coaxing . Btw , do you know the fuction of the upper and lower injector? Is one a cold start or something?? Well , I grabbed a couple of used injectors at the salvage , I will try this and the pressure regulater and lsee what happens .

Thanks TX

I'm not sure what you mean by upper and lower injector.

The 88-91 honda civics that utilize the 1.5 engine have a systen similar to a tbi (throttle body injection)that chevy uses , meaning one big injector supplies all cylinders . Honda is more or less the same , except they have a another injector involed . There is one located at the base of the throttle body(lower) and one directly above it on the upper throttle body (there about 4 inches apart ) . I was wondering what purpose each one serves??