Hey Guys,

What is the quickest way to unclog the fuel lines in a 1990 G20 350tbi? I am going camping tomorrow afternoon and would love to take the van and have been working frantically to get it running but this is the latest turn of events.

I replaced one fuel injector and cleaned the other, added new gas, and changed the oil and oil filter. Neither injectors are spraying or even dripping, both dry. Im hoping I do not need to replace the pump (friend said he couldnt hear it prime) or the fuel filter.

Any help will be greatly appreciated.

Highlander

 

So im going to try to connect the manual fuel pump primer to see if I can get that going to try to pump some new gas through the lines.

Heading to local AutoZone now and will ask if they have any suggestions as well.

 

you think the lines are clogged based on the injector's not spraying? \if you don't have a crankshaft position sensor signal...the injector won't open. I would get a noid light as this test will tell you if the injector is being powered. If you don't hear the pump prime; check your fuel pressure with a fuel pressure gauge.

 

If you don't know the state of the fuel filter remove it. Break the fuel line connection at the tbi. Blow air from the fuel filter location each direction. Put in fresh fuel filter. (Not sure though if pump will allow air to pass).

 

Update:

So I replaced the fuel pump and I get spray and combustion. However it is shooting flames and not fully turning over as to idle. I will attempt to post a video of it tomorrow morning or Tuesday.

Thanks

Highlander

 

https://www.youtube.com/watch?v=tw3N...ature=youtu.be

Here is a link to the video.

Usually I can get it to sustain a firing for a few more seconds, but I am not a good multi-tasker.

Let me know what you all think

Highlander

 

maybe the timing is out?
put the engine at top dead center and see if the distributor is pointing to number one cylinder

 

I also vote timing. That puff of combustion up through the carb is not a good sign.

 

I agree with the timing as well.

I will check the distributor and rotor in the a.m.

Thanks

Highlander

 

Sorry for the slow responses.

I checked the distributor and rotor, both seemed fine. Now the only thing I can think of is that the cables are in the wrong place on the distributor cap. I replaced the cap and spark cables and labeled the old cables and cap to make sure I put them back in the correct place. Unfortunately I threw out the old cap and cables that had everything labeled.

Does anyone know how to find out the correct position for all the cables on the cap?? It doesnt have a diagram in the Haynes repair manual.

Thanks

Highlander