Quick question about L98 EGR valve.
Thread Starter
Team Owner
Joined: May 2002
Posts: 24,337
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From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Quick question about L98 EGR valve.
Fact: I applied vacuum to it with a hand pump, and the diaphram lifted. It also holds a vacuum.
Question: Does this sound like I'm being scammed?
Smog technician's recommendation: Says the EGR valve DEFINITELY needs to be replaced.
Anyways...this means one of two things:
Question: Does this sound like I'm being scammed?
Smog technician's recommendation: Says the EGR valve DEFINITELY needs to be replaced.
Anyways...this means one of two things:
Team Owner
Joined: Mar 2000
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From: Boston, MA
Re: Quick question about L98 EGR valve. (CentralCoaster)
Did you apply vacuum to the vaccum lines attached to it? Are they cracked? Perhaps your diverter valve itself is the culpret if it isn't working.
Thread Starter
Team Owner
Joined: May 2002
Posts: 24,337
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From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Re: Quick question about L98 EGR valve. (scorp508)
The tech said the EGR wasn't working... he hooked a vaccuum pump directly to it.
I haven't checked the other stuff all out yet..
I haven't checked the other stuff all out yet..
Instructor
Joined: Aug 2002
Posts: 198
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From: Yucaipa CA
Re: Quick question about L98 EGR valve. (CentralCoaster)
Th complete test is to apply and hold a vacuum and start the engine. The vacuum should drop to zero. If that happens, the EGR valve is OK. :cheers:
Thread Starter
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Re: Quick question about L98 EGR valve. (cash's90)
Th complete test is to apply and hold a vacuum and start the engine. The vacuum should drop to zero. If that happens, the EGR valve is OK. :cheers:
You're saying the exhaust back pressure will cause it to close up? Wonder how the vacuum drops... I suppose it's not a sealed air volume in there?
I'll try what you mentioned and get back to ya. :cheers:
