No fuel from injectors when ignition on?

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malmac
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No fuel from injectors when ignition on?

Post by malmac » Sun Feb 09, 2020 10:33 pm

Hi, ive got a mk1 scirocco gti which is causing me some grief.
I cant get it to start.
We've had the injectors out, when you manually lift that flap up on the metering head, fuel sprays out of the injectors fine. But when you turn the ignition on, nothing will come out.
Its really frustrating, there's a good spark, the fuel pump is working ok too, i can hear it.

Anyone offer any advice?

Many thanks
Mal.



PeteGLi
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Re: No fuel from injectors when ignition on?

Post by PeteGLi » Mon Feb 10, 2020 12:54 pm

You say that "when you turn the ignition on, nothing will come out."

Fuel comes out when the flap lifts, but the flap will only lift if there is airflow between the metering head and the inlet manifold.

You must have the plastic intake pipe connected between the two, otherwise there is no airflow.



malmac
Posts: 149
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Location: Liverpool

Re: No fuel from injectors when ignition on?

Post by malmac » Mon Feb 10, 2020 1:08 pm

Hi,

Thanks for your reply.

When we lifted the flap manually, petrol sprayed out fine, we then put everything back together, apart from loose injector.
You turn ignition on or spin engine over, nothing will come out of injector?



mark1gls
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Re: No fuel from injectors when ignition on?

Post by mark1gls » Mon Feb 10, 2020 10:42 pm

Double check timing or any vacuum leaks/pipes missing.

Long read but may give you some things to check over....

https://vwgolfmk1.org.uk/forum/index.ph ... rts-please


Mk1 78 Scirocco GLS 1.6 FR, weekend toy.
Mk1 88 Golf GTi cabriolet 1.8 DX. Daily drive.
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malmac
Posts: 149
Joined: Mon Apr 13, 2009 4:21 pm
fill in the right answer: 10
Location: Liverpool

Re: No fuel from injectors when ignition on?

Post by malmac » Tue Feb 11, 2020 4:29 pm

Hi,

I'll check those yeah over weekend, weather permitting!
I'll have a read through that link, see what i can pick out, many thanks.