Byron 9/26 Sunday - Page 3 - ZR-1 Net Registry Forums

LGAFF · 10-02-2010

Well checked fuel pumps both go to 55lbs then drop to 40lbs.....bleed down to 30 in about 40 seconds.......

But I now have a decent vacuum leak with pump going off every 8-9 seconds, and vac test it drops quicking.

LGAFF · 10-11-2010

Vac leak fixed but now 2ndries are not opening at all, car run fine until the power key to full......

rhipsher · 10-11-2010

I'm thinking vacuum solenoid. I don't know how you test them to see if its working but they're only about $36. 4 years ago that was the culprit on mine.

XfireZ51 · 10-11-2010

Quote:

Originally Posted by rhipsher

I'm thinking vacuum solenoid. I don't know how you test them to see if its working but they're only about $36. 4 years ago that was the culprit on mine.

Same here

LGAFF · 10-11-2010

Cannot find a repalcement....any links?

rhipsher · 10-11-2010

I still have the box it came in from UPS. When I get home I'll get the name/address and website for you. It was a place in Michigan.

LGAFF · 10-11-2010

Could I leave it plugged in(Eletrical) and then just bypass it so the 2ndaries stay open all the time......either on engine or pump vacuum? Or will the injectors not turn on?

XfireZ51 · 10-11-2010

Quote:

Originally Posted by LGAFF

Could I leave it plugged in(Eletrical) and then just bypass it so the 2ndaries stay open all the time......either on engine or pump vacuum? Or will the injectors not turn on?

You can strap the secondaries OPEN like I did. Then we burn a chip that works with secondary injectors on all the time. =JEFF= can build a quick Diff MAP connector that tells the ECM your vacuum is good or connect vacuum line from secondary pump directly to Diff MAP sensor. Plug vacuum lines. Good to go for now. Everything reversible.

rhipsher · 10-11-2010

That vacuum solenoid has a little filter on the back of it and when it crumbles to dust after so many years it allows dust and dirt to get sucked into it. If I were you I'd take it off and blow some compressed air in it and see if that uncloggs it. It took me three weeks to figure out thit it was the bad component. But also that check valve thats close to it was stuck on mine also. Air should only flow in one direction on that check valve. And I could blow air in both directions. It was dirty. All there is in that check valve is a little bee bee ball. So I sprayed some WD40 in it and then blew some compressed air through it and it was working correctly again and air only flowed in one direction again. But I cleaned the check valve before I found that the solenoid was just not working. As soon as I installed the new solenoid that thing ran like a rocket again.

rhipsher · 10-11-2010

Lee this is where I bought the secondary vacuum actuator back in 07/2007

(724) 356-2256
Part's zone online
133 main st
Hickory PA 15340.

10-02-2010	#21
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,188	Re: Byron 9/26 Sunday Well checked fuel pumps both go to 55lbs then drop to 40lbs.....bleed down to 30 in about 40 seconds....... But I now have a decent vacuum leak with pump going off every 8-9 seconds, and vac test it drops quicking. __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

10-11-2010	#22
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,188	Re: Byron 9/26 Sunday Vac leak fixed but now 2ndries are not opening at all, car run fine until the power key to full...... __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

10-11-2010	#23
rhipsher Join Date: Aug 2008 Location: Houston, TX Posts: 2,319	Re: Byron 9/26 Sunday I'm thinking vacuum solenoid. I don't know how you test them to see if its working but they're only about $36. 4 years ago that was the culprit on mine.

10-11-2010	#25
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,188	Re: Byron 9/26 Sunday Cannot find a repalcement....any links? __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

10-11-2010	#26
rhipsher Join Date: Aug 2008 Location: Houston, TX Posts: 2,319	Re: Byron 9/26 Sunday I still have the box it came in from UPS. When I get home I'll get the name/address and website for you. It was a place in Michigan.

10-11-2010	#27
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,188	Re: Byron 9/26 Sunday Could I leave it plugged in(Eletrical) and then just bypass it so the 2ndaries stay open all the time......either on engine or pump vacuum? Or will the injectors not turn on? __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

10-11-2010	#29
rhipsher Join Date: Aug 2008 Location: Houston, TX Posts: 2,319	Re: Byron 9/26 Sunday That vacuum solenoid has a little filter on the back of it and when it crumbles to dust after so many years it allows dust and dirt to get sucked into it. If I were you I'd take it off and blow some compressed air in it and see if that uncloggs it. It took me three weeks to figure out thit it was the bad component. But also that check valve thats close to it was stuck on mine also. Air should only flow in one direction on that check valve. And I could blow air in both directions. It was dirty. All there is in that check valve is a little bee bee ball. So I sprayed some WD40 in it and then blew some compressed air through it and it was working correctly again and air only flowed in one direction again. But I cleaned the check valve before I found that the solenoid was just not working. As soon as I installed the new solenoid that thing ran like a rocket again.

10-11-2010	#30
rhipsher Join Date: Aug 2008 Location: Houston, TX Posts: 2,319	Re: Byron 9/26 Sunday Lee this is where I bought the secondary vacuum actuator back in 07/2007 (724) 356-2256 Part's zone online 133 main st Hickory PA 15340.