Subaru Enthusiasts Car Club of the Sierras - View Single Post

Dean · 2010-12-02, 07:49 PM

Jeff, thanks, but you are a bit behind. Wiring was fine, fuel lines were right and I had spark and no CELs so it was not cam or crank sensors.

Well, many, many diagnostic hours later, it is all back together and should start in the morning. I don't want to start it tonight since I am not ready to go do the initial warm up and break in drive.

I slightly fear I have already worn 1/2 the cylinder hone down cranking the starter 1000 times or so with and without plugs by now.

I am now an expert at all things spark and side feed fuel related without removing the manifold. I could probably give Cory a run for his money swapping injectors.

After a bunch of other stuff and ensuring the injectors were getting signal, there was nothing left but the injectors themselves.

I have developed soon to be patented 1/2" Wide 8.5" Long specially folded strips of fuel sensor paper made from 100% recycled material that I will be marketing for testing if cylinders are getting fuel.

Far easier then installing and removing plugs.

The first thing I would tell would be injector testers is that removing injectors dumps fuel into the cylinder which may give you a false positive. Make sure cylinders are dry before inserting the test strips and applying power to the injector.

I would also suggest having a fuel pressure tester in line during all testing. it is quite easy with side feed injectors for the injector to appear to be installed but the bottom seal not be tight and fuel leaks into the cylinder around it as soon as the pump comes on. The gauge immediately tells you this when it doesn't hold static pressure with the pump off.

So after much swapping, drying, testing, retesting, etc. I had 3 stuck injectors. Remember I said they had recently been cleaned and flow tested so they should/could not be the issue???

Apparently you are not supposed to store freshly cleaned and flow tested injectors for 4-6 months at least not without telling the people dong the cleaning that you will be. The normal after cleaning lube/rinse does not really hold up to being left dry and the injectors can get stuck closed. Ones pulled from use are susceptible to sticking as well if stored with just fuel in them for an extended period.

Bashing them in the ultrasonic cleaner again for a while frees them up so the open again. We will see in the AM.

2010-12-02, 07:49 PM	#108
Dean Señor Cheap Bastarde Real Name: Dean Join Date: May 2003 Location: $99 Tire Store Posts: 9,294 Car: $.04 STI Class: Fast,Cheap & Reliable=STI Deal, did somebody say Deal? Oh, Dean, yeah that's me.	Jeff, thanks, but you are a bit behind. Wiring was fine, fuel lines were right and I had spark and no CELs so it was not cam or crank sensors. Well, many, many diagnostic hours later, it is all back together and should start in the morning. I don't want to start it tonight since I am not ready to go do the initial warm up and break in drive. I slightly fear I have already worn 1/2 the cylinder hone down cranking the starter 1000 times or so with and without plugs by now. I am now an expert at all things spark and side feed fuel related without removing the manifold. I could probably give Cory a run for his money swapping injectors. After a bunch of other stuff and ensuring the injectors were getting signal, there was nothing left but the injectors themselves. I have developed soon to be patented 1/2" Wide 8.5" Long specially folded strips of fuel sensor paper made from 100% recycled material that I will be marketing for testing if cylinders are getting fuel. Far easier then installing and removing plugs. The first thing I would tell would be injector testers is that removing injectors dumps fuel into the cylinder which may give you a false positive. Make sure cylinders are dry before inserting the test strips and applying power to the injector. I would also suggest having a fuel pressure tester in line during all testing. it is quite easy with side feed injectors for the injector to appear to be installed but the bottom seal not be tight and fuel leaks into the cylinder around it as soon as the pump comes on. The gauge immediately tells you this when it doesn't hold static pressure with the pump off. So after much swapping, drying, testing, retesting, etc. I had 3 stuck injectors. Remember I said they had recently been cleaned and flow tested so they should/could not be the issue??? Apparently you are not supposed to store freshly cleaned and flow tested injectors for 4-6 months at least not without telling the people dong the cleaning that you will be. The normal after cleaning lube/rinse does not really hold up to being left dry and the injectors can get stuck closed. Ones pulled from use are susceptible to sticking as well if stored with just fuel in them for an extended period. Bashing them in the ultrasonic cleaner again for a while frees them up so the open again. We will see in the AM. __________________ I am a Commodore PET --- Now get off my lawn you kids...