Re: 87 YJ again....
 

"Steve Foley" <steve.foley@DELETEatt.net> wrote in message
news:DDCmh.629877$QZ1.189511@bgtnsc04-news.ops.worldnet.att.net...
> "reconair" <reconair@staffnet.com> wrote in message
> news:12pls91evrk9p4c@corp.supernews.com...
> > 87YJ is carbuerated, not FI.
>
> I thought the four-banger was injected. I could be wrong. My 87 YJ
> has a 258 (as did my 73 Cherokee and 78 CJ)
>
All the four banger AMC engines are fuel injected in the YJ. In 1991 they
went from throttle body to MPI. The six bangers went from carburetor to MPI
in 1990. I am not sure of the exact manufacturing dates. Service and
replacement procedures are going to be different for the OP's throttle body
FI than for the later model, more common MPI.

Earle

Re: 87 YJ again....
 

"Steve Foley" <steve.foley@DELETEatt.net> wrote in message
news:DDCmh.629877$QZ1.189511@bgtnsc04-news.ops.worldnet.att.net...
> "reconair" <reconair@staffnet.com> wrote in message
> news:12pls91evrk9p4c@corp.supernews.com...
> > 87YJ is carbuerated, not FI.
>
> I thought the four-banger was injected. I could be wrong. My 87 YJ
> has a 258 (as did my 73 Cherokee and 78 CJ)
>
All the four banger AMC engines are fuel injected in the YJ. In 1991 they
went from throttle body to MPI. The six bangers went from carburetor to MPI
in 1990. I am not sure of the exact manufacturing dates. Service and
replacement procedures are going to be different for the OP's throttle body
FI than for the later model, more common MPI.

Earle

Re: 87 YJ again....
 

"Steve Foley" <steve.foley@DELETEatt.net> wrote in message
news:DDCmh.629877$QZ1.189511@bgtnsc04-news.ops.worldnet.att.net...
> "reconair" <reconair@staffnet.com> wrote in message
> news:12pls91evrk9p4c@corp.supernews.com...
> > 87YJ is carbuerated, not FI.
>
> I thought the four-banger was injected. I could be wrong. My 87 YJ
> has a 258 (as did my 73 Cherokee and 78 CJ)
>
All the four banger AMC engines are fuel injected in the YJ. In 1991 they
went from throttle body to MPI. The six bangers went from carburetor to MPI
in 1990. I am not sure of the exact manufacturing dates. Service and
replacement procedures are going to be different for the OP's throttle body
FI than for the later model, more common MPI.

Earle

Re: 87 YJ again....
 

yes boys it is a Throttle Body....plugs, wires, cap, rotor, fuel filter all
replaced a month ago

Re: 87 YJ again....
 

yes boys it is a Throttle Body....plugs, wires, cap, rotor, fuel filter all
replaced a month ago

Re: 87 YJ again....
 

yes boys it is a Throttle Body....plugs, wires, cap, rotor, fuel filter all
replaced a month ago

Re: 87 YJ again....
 

"Boog44" <hoosierfan666@yahoo.com> wrote in message
news:72c59063b57d9009bf76d586cc20ac5e@localhost.ta lkaboutautos.com...
> yes boys it is a Throttle Body....plugs, wires, cap, rotor, fuel filter
all
> replaced a month ago
>
Watch the engine while it is running in the dark. I have caught spark leaks
like this before. Another more painful method is to run your hands over the
spark plug wires and distributor with it running. You could also check the
plugs for evidence of fouling.

Earle

Re: 87 YJ again....
 

"Boog44" <hoosierfan666@yahoo.com> wrote in message
news:72c59063b57d9009bf76d586cc20ac5e@localhost.ta lkaboutautos.com...
> yes boys it is a Throttle Body....plugs, wires, cap, rotor, fuel filter
all
> replaced a month ago
>
Watch the engine while it is running in the dark. I have caught spark leaks
like this before. Another more painful method is to run your hands over the
spark plug wires and distributor with it running. You could also check the
plugs for evidence of fouling.

Earle

Re: 87 YJ again....
 

"Boog44" <hoosierfan666@yahoo.com> wrote in message
news:72c59063b57d9009bf76d586cc20ac5e@localhost.ta lkaboutautos.com...
> yes boys it is a Throttle Body....plugs, wires, cap, rotor, fuel filter
all
> replaced a month ago
>
Watch the engine while it is running in the dark. I have caught spark leaks
like this before. Another more painful method is to run your hands over the
spark plug wires and distributor with it running. You could also check the
plugs for evidence of fouling.

Earle

Re: 87 YJ again....
 

Right you are. My mistake. I conveniently overlooked the 4 banger part.

Scott
91YJ
"Earle Horton" <earle@vascongau.usa> wrote in message
news:459af9f8$0$3517$a82e2bb9@reader.athenanews.co m...
> "Steve Foley" <steve.foley@DELETEatt.net> wrote in message
> news:DDCmh.629877$QZ1.189511@bgtnsc04-news.ops.worldnet.att.net...
>> "reconair" <reconair@staffnet.com> wrote in message
>> news:12pls91evrk9p4c@corp.supernews.com...
>> > 87YJ is carbuerated, not FI.
>>
>> I thought the four-banger was injected. I could be wrong. My 87 YJ
>> has a 258 (as did my 73 Cherokee and 78 CJ)
>>
> All the four banger AMC engines are fuel injected in the YJ. In 1991 they
> went from throttle body to MPI. The six bangers went from carburetor to
> MPI
> in 1990. I am not sure of the exact manufacturing dates. Service and
> replacement procedures are going to be different for the OP's throttle
> body
> FI than for the later model, more common MPI.
>
> Earle
>
>