MISSING>>>><<<<?
Thread Starter
Racer
Joined: Jan 2005
Posts: 315
Likes: 0
From: tomahawk wisconsin
MISSING>>>><<<<?
OK well this car its getting on my nerves...LOL...
Anyway its a 91 and it seems to have a dead miss.I replaced wires,cap,rotor,coil,fuel filter,,also did a fuel pressure check and turned it from 50 down to 44lbs....timmed it back to 6* ...And ran my scanner on it and everything seems fine.If I put the car in drive and sit still idling, every 45 seconds to a minute it misses hard.I can also feel it when driving down the road if I ease on the gas.
I was thinking a bent valve but if that was the case it would constintley miss..tomarrow I am going to go to the shop and do a leak down test,....
Anyway if anyone has any idea on anything else it could be please post it.thanks guys...hopefully I will figure it out tomarrow
Anyway its a 91 and it seems to have a dead miss.I replaced wires,cap,rotor,coil,fuel filter,,also did a fuel pressure check and turned it from 50 down to 44lbs....timmed it back to 6* ...And ran my scanner on it and everything seems fine.If I put the car in drive and sit still idling, every 45 seconds to a minute it misses hard.I can also feel it when driving down the road if I ease on the gas.
I was thinking a bent valve but if that was the case it would constintley miss..tomarrow I am going to go to the shop and do a leak down test,....
Anyway if anyone has any idea on anything else it could be please post it.thanks guys...hopefully I will figure it out tomarrow
Thread Starter
Racer
Joined: Jan 2005
Posts: 315
Likes: 0
From: tomahawk wisconsin
I have replaced all the plugs too........even though its missing its still faster than a 03 lightening!!!!!!!!!!!!!!My buddy has a black one and we raced 65 to 130 and i gained at least 2 cars on him...not to bad for a 91 compared to a 03, but then again it was a ford....
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
ok, whats the gap?
And street racing kills are not permitted on the forum... with all the deaths resulting from street racing, and the nature of modern society, if the forum permits bragging, means that we support it, and someone could sue the forum for such support, if they do it and someone gets killed.
And street racing kills are not permitted on the forum... with all the deaths resulting from street racing, and the nature of modern society, if the forum permits bragging, means that we support it, and someone could sue the forum for such support, if they do it and someone gets killed.
Thread Starter
Racer
Joined: Jan 2005
Posts: 315
Likes: 0
From: tomahawk wisconsin
ok i did a compression check and all read 125lbs but #6....it came back 160lbs???????I think I have a bad injector on that cylinder and its filling the rings with gas there for giving me the high reading..the plug looks good and has no sighn of oil present.although it does smell of gas pretty bad....does anybody else have any other ideas before I take my plenum off and change the injector????thanks guys.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Originally Posted by ar91c4
ok i did a compression check and all read 125lbs but #6....it came back 160lbs???????I think I have a bad injector on that cylinder and its filling the rings with gas there for giving me the high reading..the plug looks good and has no sighn of oil present.although it does smell of gas pretty bad....does anybody else have any other ideas before I take my plenum off and change the injector????thanks guys.
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Thread Starter
Racer
Joined: Jan 2005
Posts: 315
Likes: 0
From: tomahawk wisconsin
Originally Posted by bogus
125 psi sounds LOW to me....
Melting Slicks
Joined: Nov 1999
Posts: 2,274
Likes: 129
From: NOVA
St. Jude Donor '05-'06-'07
Originally Posted by ar91c4
ok i did a compression check and all read 125lbs but #6....it came back 160lbs???????I think I have a bad injector on that cylinder and its filling the rings with gas there for giving me the high reading..the plug looks good and has no sighn of oil present.although it does smell of gas pretty bad....does anybody else have any other ideas before I take my plenum off and change the injector????thanks guys.
Thread Starter
Racer
Joined: Jan 2005
Posts: 315
Likes: 0
From: tomahawk wisconsin
Originally Posted by XFIRED
#6 @ 160 does not sound right? Possible valve/cam problem????????
Melting Slicks
Joined: Nov 1999
Posts: 2,274
Likes: 129
From: NOVA
St. Jude Donor '05-'06-'07
Originally Posted by ar91c4
I shouldn't gain compression on #6 if I had a cam/valve/spring problem..I think if that was the case I would have low compression on that cylinder.I know its not oil and the only other thing that I can think of that would cause high compression would be gas in the cylinder causing the rings to seal.(open injector).........anybody every experianced something like this from a factory engine?
If you're sure it's the injector. You could disconnect it (wiring harness)@ cylinder #6 and recheck compression in that cylinder. If the compression goes to the normal range like the rest, you were right
My thoughts on the valve\cam issue was maybe they were staying closed too long. Thus, building compression.
I hope someone will chime in here with better insight to help you out.