dlove024

My car has been in the shop for over a month and the mechanics are stumped. They have replaced a lot of parts and tried numerous other things. They say that the engine itself is in good condition, and that the problem is not mechanical. They have replaced the wiring harness. One of the guys is the one that did the swap on my car which is why I had it towed to his shop. They have asked me to turn to other people for suggestions. Any ideas on what to tell them?

z6hatchboy

check to see if you have spark, if you dont. Check power to the ignitor coil and let us know, check the timing too. What harness are you using?

iwanttokillgod

how r we suppose to help you havent given any good info

dlove024

Has spark and fuel. Distributor has been replaced. Timing is fine. Harness if from a 92 Civic SI. Car is a 92 SI. Tried different ECUs, compression test, leakdown, fuel pump, fuel filter, fuel control valve, fuel pressure regulator.

Former User

Do the fuel injectors have battery voltage?

Are the plug wires or fuel injector wires out of order?

iwanttokillgod

what dizzy are u using

dlove024

Injectors have voltage, and tested resistance across each one and they are the same. Plug wires and injector wires in correct order. TD60-U dizzy.

Smells like gas very badly when attempting to start.

raidacaipo

it could be anything.. your not giving us good info that we can read from our computer and figure out..

what exactly is happening? are you trying to fire it up and nothing is happening? is it turning over but not starting?

first thing is to check all grounds.. head to chasis, tranny to chasis, and thermostat ground. Second check fuel pressure. It may need adjusting if your using an aftermarket one.

also since its an h22a im assuming your working with an obd1 motor with obd1 stock fuel injectors correct? those injectors need a resistor box otherwise your going to fry your ecu.. did they wire a fuel resistor box?

dlove024

Grounds have been checked. Fuel pressure adjusted, still nothing. Also has had a valve adjustment.

Anything else?

Former User

Is the CEL ON?

The strong smell of gas may indicate that the engine is flooded. Have you changed the engine oil?

As you have spark and fuel, then it's likely something simple that has just been overlooked -- plug wires out of order, fuel injector connectors out of order, low compression, or mechanical timing is off.

Khoald

/agree with above check timing it is possible to build compression with timing off but the spark will not occur at the right time so i would check that and if it is way off pray you didn't bend valves

dlove024

CEL not on, checked codes anyway and none. Oil is fine. Plug wires in correct order, fuel injector connectors in order, has good compression, and timing is correct. The car ran GREAT for 2 years and recently started having the starting issue. Could it possibly be the internal wiring harness has corroded somewhere?

Former User

Such a problem with the wire harness would have to affect spark or fuel to cause a no start.

One of the items that I mentioned is more than likely the problem. You need to triple check all the basics.

What color is spark at the plugs? Is it bright white/bluish or weak orange?

dlove024

Spark is a weak blue. Brand new plugs will turn black quickly when attempting to start.

Former User

I am not sure how to interpret your spark. Usually weak spark is orange, whereas strong spark is a very bright white with a bluish tint. Is your spark weak or strong? If spark is weak, then the coil may be bad.

dlove024

Weak spark, but have tried 5, yes FIVE, different distributors.

Former User

Weak spark will prevent an engine from starting. This is critical information that should have been mentioned in the first post. Any other information we should know about?

Did you use the same coil in all five distributors that you tested? With the key in ON(II), what voltage do you measure on the BLK/YEL wire attached to the igniter unit?

dlove024

11.91V at the ignitor. Different coil used in all five distributors tested.

dlove024

Any ideas?

dlove024

bump

SLURS

iTrader: (1)

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dlove024

bump

Former User

What are the cylinder compression numbers without and with some oil squirted into the cylinder?

a503067

what does the starter wire test while cranking

dlove024

It will read 30 psi on all 4 cylinders, but if you can get it to run for a few minutes, it will jump to 210+ on all 4.