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Forum: C4 ZR-1 Technical Postings

05-14-2017

Replies: 2

Intake coolant issue

Views: 3,101

Posted By 90_ZR1

Re: Intake coolant issue

Thank you for the detailed and informative response! I bought a small aluminum fitting which I inserted between the nipple and housing which will provide good support, as well as, help funnel...

Forum: C4 ZR-1 Technical Postings

05-13-2017

Replies: 2

Intake coolant issue

Views: 3,101

Posted By 90_ZR1

Intake coolant issue

The fragile coolant stem on the drivers side of the intake of my '90 has broken off and I can't find anything which will keep it sealed. Can I just plug the hose which feeds the coolant, and related...

Forum: C4 ZR-1 Technical Postings

12-06-2016

Replies: 3

New ZR1 Owner With Plenum Vacuum Question

Views: 2,010

Posted By 90_ZR1

Re: New ZR1 Owner With Plenum Vacuum Question

Thsnks for the pic. It is the vacuum line that goes to the MAP sensor. It sure is frustrating when you methodically remove parts, then something disappears when you go to reassemble. Not sure what...

Forum: C4 ZR-1 Technical Postings

12-06-2016

Replies: 3

New ZR1 Owner With Plenum Vacuum Question

Views: 2,010

Posted By 90_ZR1

New ZR1 Owner With Plenum Vacuum Question

Bought my first ZR1 a few weeks ago and am trying to get it running right.

I pulled the plenum and replaced the injectors and coils. I almost have it back together, but don't know where the plug...

Forum: C4 ZR-1 Technical Postings

11-18-2016

Replies: 7

Fuel Injector Flow Test

Views: 1,941

Posted By 90_ZR1

Re: Fuel Injector Flow Test

Just tested them and they're all at 15.4 or very close.

Forum: C4 ZR-1 Technical Postings

11-18-2016

Replies: 7

Fuel Injector Flow Test

Views: 1,941

Posted By 90_ZR1

Re: Fuel Injector Flow Test

Thanks Frank. I bought the injectors you put me on to, so hoping my problems will be solved. I also replaced the coils and am about to replace the fuel filter.

Forum: C4 ZR-1 Technical Postings

11-18-2016

Replies: 7

Fuel Injector Flow Test

Views: 1,941

Posted By 90_ZR1

Re: Fuel Injector Flow Test

Thanks Frank. Have you ever heard of one testing at 17 ohms?

Forum: C4 ZR-1 Technical Postings

11-17-2016

Replies: 7

Fuel Injector Flow Test

Views: 1,941

Posted By 90_ZR1

Fuel Injector Flow Test

Does anyone know of a simple way to flow test fuel injectors? I'm chasing a misfire and would rather not drop $600 for a new set if I don't have to. I will do the OHM test as well.

Forum: C4 ZR-1 Technical Postings

11-12-2016

Replies: 10

New ZR1 owner-timing & sparkplug question

Views: 2,799

Posted By 90_ZR1

Re: New ZR1 owner-timing & sparkplug question

That file is very detailed and helpful. Very technical, but I should be able to figure it out.

Forum: C4 ZR-1 Technical Postings

11-02-2016

Replies: 10

New ZR1 owner-timing & sparkplug question

Views: 2,799

Posted By 90_ZR1

Re: New ZR1 owner-timing & sparkplug question

Thanks for the input guys!

Forum: C4 ZR-1 Technical Postings

11-01-2016

Replies: 10

New ZR1 owner-timing & sparkplug question

Views: 2,799

Posted By 90_ZR1

Re: New ZR1 owner-timing & sparkplug question

Ok. Is that something which you can explain?

Forum: C4 ZR-1 Technical Postings

11-01-2016

Replies: 10

New ZR1 owner-timing & sparkplug question

Views: 2,799

Posted By 90_ZR1

New ZR1 owner-timing & sparkplug question

I just got my first ZR-1 (1990) last week and drove it for the first time this evening.
It doesn't idle too badly, but misfires badly when driving. My first question is what sparkplugs are...

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