Type 4 Fuel Injection issue

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Type 4 Fuel Injection issue

Post by peregrine67 on Wed Nov 02, 2011 12:43 pm

So a couple of times this week Pippi has not wanted to start. However if I spray just a shot of ether in she cranks right up and runs fine. Anybody with experience on FI have any suggestions?
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Re: Type 4 Fuel Injection issue

Post by peregrine67 on Wed Nov 02, 2011 12:44 pm

background: Fuels pump and four main injectors have <3000 miles on 'em.
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Re: Type 4 Fuel Injection issue

Post by vw57drvr on Wed Nov 02, 2011 1:03 pm

Which system do you have? D or L?
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Re: Type 4 Fuel Injection issue

Post by peregrine67 on Wed Nov 02, 2011 1:27 pm

not sure. it's whatever came stock in '76.
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Re: Type 4 Fuel Injection issue

Post by vw57drvr on Wed Nov 02, 2011 1:29 pm

The L-Jetronic had an air flow meter. There is a manual here on each: http://www.type4.org/technology/problems_html
and some trouble shooting tips. At least it used to. Looks like it only has the L-Jet manuals now.
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Re: Type 4 Fuel Injection issue

Post by peregrine67 on Wed Nov 02, 2011 1:44 pm

based on my symptoms it appears to be the cold start valve or the thermo switch.
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Re: Type 4 Fuel Injection issue

Post by vw57drvr on Wed Nov 02, 2011 1:49 pm

Cold start valve should be pretty easy to test. Of course, its a lot easier to troubleshoot when its not random.lol.
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Re: Type 4 Fuel Injection issue

Post by peregrine67 on Wed Nov 02, 2011 1:59 pm

since she starts just fine with ether and that's the one injector I didn't replace, it makes sense to me that's the problem.
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Re: Type 4 Fuel Injection issue

Post by peregrine67 on Wed Nov 02, 2011 2:00 pm

thanks for your help.
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Re: Type 4 Fuel Injection issue

Post by vw57drvr on Wed Nov 02, 2011 2:01 pm

I would agree. I doubt the thermo time switch would be random....a relay, maybe.
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Re: Type 4 Fuel Injection issue

Post by peregrine67 on Wed Nov 02, 2011 2:23 pm

I have an extra relay. I'll give that a shot before I buy a new valve.
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Re: Type 4 Fuel Injection issue

Post by ASBug on Wed Nov 02, 2011 3:30 pm

Sounds like a 5th injector issue.
Clean it.
KC
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