No Start driving me crazy!

[911obgyn]

I have used a 10cc syringe and a can of carb cleaner with a battery and momentary switch to clean and unstick injectors

[911obgyn]

Fuel pressure is good, there is no cracking pressure they are Solinoid not pressure I use the can of carb cleaner on the input side of injector and pulse injector with switched 12v small end of syringe fits red tube and other end without plunger fits o ringed fuel rail side. Get new seals you will need them.

[gomezoneill]

Shouldn't have drained the fuel tank. Only use no ethanol fuel with stabil. And keep the tank full. My bet is the injectors are plugged.

[Dan Owens]

Ok here's my latest progress report on my no start issue.

In between the rain storms over the last several days I stripped down the engine to get to the fuel rails and injectors. Pulled everything apart and only broke 1 bolt for the fuel rail mount to the intake manifold and broke 1 fuel injector retention clip.

After pulling the rails and injectors I tested flow thru the fuel supply lines and have no issues there. I flushed out the fuel rails and found no debris and they are clean as a whistle. Injectors were typical dirty on the exterior so I cleaned them well and then pulsed them with a 9v battery and confirmed opening from the power signal. I then hooked up a rig to be able to flush cleaner thru the injector while pulsing with power. All 6 injectors flowed great without much debris at all. Today I will reverse backflush them while I wait for the new seal kits to arrive to begin the reinstall.

I feel good about the current injector condition but uncomfortable about what role if any they played in the no start since they seem clean and have such good flow without any apparent hesitation or difficulty. I think I would feel better if at least a few seemed to be clogged and had poor flow at the start of testing and cleaning them. I guess I'll know better once I reinstall everything and attempt to fire it up.

While everything is stripped down and I have good access I'm using my fiber optic camera to inspect the backside of the engine for all the connections and vacuum hose and anything else I may want to fix or change out while I have clear access to top side

I'll post another update once I put it all back together and see what happens. If anyone has any suggestions of something else to check or test while Im at this stage please shoot me your ideas.

[brianlay]

I would put the injectors on the rails and connect them to the fuel supply but not insert them into the manifold.
Connect one injector to the harness, crank it and see one injector spray.
All the tests you've done so far don't add up. You believe you have a pulse, have fuel flow, and the injectors aren't clogged.
Possibly you unclogged the injectors by cleaning and testing them...

[Dan Owens]

Originally Posted by brianlay

I would put the injectors on the rails and connect them to the fuel supply but not insert them into the manifold.
Connect one injector to the harness, crank it and see one injector spray.
All the tests you've done so far don't add up. You believe you have a pulse, have fuel flow, and the injectors aren't clogged.
Possibly you unclogged the injectors by cleaning and testing them...

Yes that's my plan after I get the new seals in. Mount them in the rails and flow each from the car by cranking the engine. If all still flow well I'll finish the install.
I already confirmed both power and pulse to the injectors so I'm not concerned on that front.

[Dan Owens]

Great News !!!!

I finished the injector reseal and cleaning. I did run into an small issue that the plastic spacer ring in the seal kits were 2 times the thickness of the original ones. If I used those the the pital cover would not fit on completely. SO I just cleaned and reused the originals and all was good. Assembled the fuel rails and tested the injectors and had good spray. Finished the install and buttoned up the key items on the engine, flush the fuel lines and rails again, threw in new gas and fired it right up no problem. I smoked a little at start up but then cleaned right up and ran good. I need to double check all the fuel connections before I finish putting everything back on but at this point I declare success!

I can only suspect that the injectors were clogged enough to not spray and I dislodged it either during pulsing, removal or cleaning.

In checking all my electrical connections in the engine bay I did find that the connector where the O2 sensors plugs in is broken in half. I don't know If I did it accidently in working on the engine or not but it looks like an old crack. I'll have to check to see how I can repair this as the connector broke on the car side of the connection and not the sensor side.