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Forum: C4 ZR-1 Technical Postings

09-21-2018

Replies: 5

Plenum removed. Change coils pack or not

Views: 1,211

Posted By Siwir

Re: Plenum removed. Change coils pack or not

Ok good to know.👌
I just received vacuum selenoid from rock auto and it seems that this unit keeps vacuum worst then my old😞. Is this normal ? When you apply vacuume on one site of this selenoid...

Forum: C4 ZR-1 Technical Postings

09-20-2018

Replies: 5

Plenum removed. Change coils pack or not

Views: 1,211

Posted By Siwir

Re: Plenum removed. Change coils pack or not

Hi,

Thanks for quick replay. So I’m going to just exchange vacuum solenoid (arrives tomorrow form USJ) and will measure resistance on all coils. (I’ll compare to new / one spare I have). If...

Forum: C4 ZR-1 Technical Postings

09-19-2018

Replies: 5

Plenum removed. Change coils pack or not

Views: 1,211

Posted By Siwir

Plenum removed. Change coils pack or not

Hi,
I'm quiet new owner of 1990 Zr-1 corvette and I just decided to pull off the plenum due to first injectors change after 28 years :)
My question to more experience members is do I have to...

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