1990 ZR-1 Vacuum Leak - ZR-1 Net Registry Forums

KCJ · 11-08-2008

Where is a good source to buy the entire secondary vacuum hose assembly and a vacuum solenoid, both of which are leaking in my ZR-1?
The assembly is leaking where the rubber ends join the ports. Any ideas as to why this is such a common affliction with the 90s ZR-1s?
Would appreciate suggestions on possible repairs to these parts.
Thanks.
Chris

11-08-2008

Chris, I just replied to your email. I wouldn't say it's a common affliction. But due to the most cars being built in 90, more people actively driving them, and the fact they are now 20 years old are all contributing factors.

Hammer · 11-08-2008

Solenoid is available at the dealer, you will need the filter too. They don't make the ones like ours anymore.
Solenoid # 1997222
Filter # 1977796

Hoses are probably going to have to come from Kurt White.

bldavis11 · 11-09-2008

Chris, What you are talking about is the secondary vacuum "spider." You're much better off trying to find and fix the individual leaks if they are not under the plenum. Maybe a wisp of silicone or epoxy. As is typical, GM doesn't make replacement spiders any longer, though a good number of the connectors are still available at parts stores and large online parts warehouses.

11-08-2008	#1
KCJ Join Date: Oct 2008 Location: Ontario Canada Posts: 6	1990 ZR-1 Vacuum Leak Where is a good source to buy the entire secondary vacuum hose assembly and a vacuum solenoid, both of which are leaking in my ZR-1? The assembly is leaking where the rubber ends join the ports. Any ideas as to why this is such a common affliction with the 90s ZR-1s? Would appreciate suggestions on possible repairs to these parts. Thanks. Chris

11-08-2008	#2
Jeffvette Guest Posts: n/a	Re: 1990 ZR-1 Vacuum Leak Chris, I just replied to your email. I wouldn't say it's a common affliction. But due to the most cars being built in 90, more people actively driving them, and the fact they are now 20 years old are all contributing factors.

11-08-2008	#3
Hammer Join Date: Apr 2006 Location: Ideho Posts: 2,647	Re: 1990 ZR-1 Vacuum Leak Solenoid is available at the dealer, you will need the filter too. They don't make the ones like ours anymore. Solenoid # 1997222 Filter # 1977796 Hoses are probably going to have to come from Kurt White.

11-09-2008	#4
bldavis11 Join Date: Mar 2006 Location: Portsmouth, VA Posts: 245	Re: 1990 ZR-1 Vacuum Leak Chris, What you are talking about is the secondary vacuum "spider." You're much better off trying to find and fix the individual leaks if they are not under the plenum. Maybe a wisp of silicone or epoxy. As is typical, GM doesn't make replacement spiders any longer, though a good number of the connectors are still available at parts stores and large online parts warehouses.