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  #16  
Old January 28th, 2022, 08:08
racintck racintck is offline
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Re: 89 Vacuum System

I can not verify the age of the wires, but I can say the cap had been on long enough to where one of the screws corroded and broke off when trying to remove it. Those have been added to the list.

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How old are the plug wires?
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  #17  
Old January 28th, 2022, 17:44
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cruiser54 cruiser54 is offline
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Re: 89 Vacuum System

Replace the wires.
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  #18  
Old January 29th, 2022, 09:51
racintck racintck is offline
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Re: 89 Vacuum System

Replaced the wires and found cylinder 4 is doing nothing, so I am on the hunt for injectors.
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  #19  
Old January 29th, 2022, 10:24
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cruiser54 cruiser54 is offline
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Re: 89 Vacuum System

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Originally Posted by racintck View Post
Replaced the wires and found cylinder 4 is doing nothing, so I am on the hunt for injectors.

trevor.skankfootracing@gmail.com
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  #20  
Old January 29th, 2022, 10:33
RCP Phx RCP Phx is offline
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Re: 89 Vacuum System

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Originally Posted by racintck View Post
Replaced the wires and found cylinder 4 is doing nothing, so I am on the hunt for injectors.
You should find out what it is doing before throwing more money at it !!!
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  #21  
Old January 29th, 2022, 18:35
lawsoncl lawsoncl is offline
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Re: 89 Vacuum System

You have spark on #4 I assume? Tested voltage at the injector? On an 89, the computer controls the positive connector to the injector, and the ground sides go to the connector by the dipstick. Compression?

I wouldn't be surprised if the injectors need some love though. At this age, the original steel body ones might be rusted through. Cruiser posted a contact for getting decent refurbished Bosch injectors. Beware the "new" ones on eBay for cheap are chinese knockoffs and a lot of people have reported issues with them
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  #22  
Old January 29th, 2022, 19:06
racintck racintck is offline
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Re: 89 Vacuum System

Brand new cap, rotor and wires pull plug wire no change in idle

The previous owner did a hack job "fixing" four mouse chewed wires and while I was cleaning that mess up, I figured the wiring could be an issue. Once it was rewired I tried again and no difference when pulling the plug wire.

Next step I pulled the fuel rail and with a little tug injector 6 started spewing and almost all of the o-rings where jacked up. My plan is to clean them up, and try bench testing them. They did have some rust on them and needed attention anyways.

Quote:
Originally Posted by lawsoncl View Post
You have spark on #4 I assume? Tested voltage at the injector? On an 89, the computer controls the positive connector to the injector, and the ground sides go to the connector by the dipstick. Compression?

I wouldn't be surprised if the injectors need some love though. At this age, the original steel body ones might be rusted through. Cruiser posted a contact for getting decent refurbished Bosch injectors. Beware the "new" ones on eBay for cheap are chinese knockoffs and a lot of people have reported issues with them
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