Fuek Pressure Regulator
Safety Car
Joined: Apr 2011
Posts: 3,660
Likes: 22
Yup. Safe bet.
that diaphragm should seal like a drum. And IF there is gas smell in the vac line there is a damn good chance there has been gas in that line as well.....raw gas entering the plenum/intake causes rough running, rough idle, a rich smell at higher rpm, and eventually fouled plugs and damage to the engine,.
you want to fix this before it fills a cyl with gas and fires and tries to turn over....
trust me on that.
That diaphragm sells for about $75 at most parts stores. For the cost you might consider an adjustable for <200.00 that comes with everything.
that diaphragm should seal like a drum. And IF there is gas smell in the vac line there is a damn good chance there has been gas in that line as well.....raw gas entering the plenum/intake causes rough running, rough idle, a rich smell at higher rpm, and eventually fouled plugs and damage to the engine,.
you want to fix this before it fills a cyl with gas and fires and tries to turn over....
trust me on that.
That diaphragm sells for about $75 at most parts stores. For the cost you might consider an adjustable for <200.00 that comes with everything.
Thread Starter
Safety Car
Joined: Nov 2008
Posts: 4,328
Likes: 15
From: Jacksonville FL
Thanks Lee. The symptoms you describe are what I am experiencing now. Ive had a lot of rough running issues of late. Other than running rich, my scanner is telling me nothing so I am figuring its fuel related.
What size are the tamper proof screws so I can get the bugger apart?
What size are the tamper proof screws so I can get the bugger apart?
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
Thanks Lee. The symptoms you describe are what I am experiencing now. Ive had a lot of rough running issues of late. Other than running rich, my scanner is telling me nothing so I am figuring its fuel related.
What size are the tamper proof screws so I can get the bugger apart?
What size are the tamper proof screws so I can get the bugger apart?
Thread Starter
Safety Car
Joined: Nov 2008
Posts: 4,328
Likes: 15
From: Jacksonville FL
IF you are going that far, why not go a further step? Take off the injectors and put them where they belong. Recycling. Get some rebuilt injectors from FIC. The stock injectors are Multecs and are worse than broken injectors. Broken injectors you know have to be replaced. Multecs, you never know since you have the illusion it works.
New injectors are definitely on the list but unless they are the issue they will have to wait. I am itching to get some Bosch 3s from FIC but budget rules them out until I am sure. I ohmed them out a few months ago and all was well and I am going to redo that today as well as get a piece of hose and listen to each one. I am not sure what to do with the 9th injector tho.
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Thread Starter
Safety Car
Joined: Nov 2008
Posts: 4,328
Likes: 15
From: Jacksonville FL
One good thing a PO did was put on the adjustable regulator. I am looking but I am not finding a diaphragm locally. That really sux. Its my DD and I am stuck.
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
The '85 cars actually came with Bosch type 1 injectors from the factory
New injectors are definitely on the list but unless they are the issue they will have to wait. I am itching to get some Bosch 3s from FIC but budget rules them out until I am sure. I ohmed them out a few months ago and all was well and I am going to redo that today as well as get a piece of hose and listen to each one. I am not sure what to do with the 9th injector tho.
New injectors are definitely on the list but unless they are the issue they will have to wait. I am itching to get some Bosch 3s from FIC but budget rules them out until I am sure. I ohmed them out a few months ago and all was well and I am going to redo that today as well as get a piece of hose and listen to each one. I am not sure what to do with the 9th injector tho.