I would look at the rockers arms. It sounds like the exhaust valve is
stuck shut.
Wayne
Wayne and Lisa, Bolton Landing, NY, http://web.vplp.net/~superglider/
85 XJ Wagoneer Limited, 82 Eagle SX/4
66 Ambo 990 Wagon, AC, PS, PB, PW, Apollo Yellow woody
69 Ambo Coupe, 401, M12
83 Eagle Limited wagon
On Mon, 18 Jul 2005 08:54:25 -0700 "Jim Blair" <carnuck@xxxxxxxxxxx>
writes:
A: Another quick thought is something may have fallen into the intake
and is
jamming the intake valve open. I had that happen on a Datsun B210
and dopey
me, thinking it was just a bit of carbon, I tried to rev it through.
Turned
out to be the "missing" wingnut from the carb! DOH! (it had a nut
holding
the air cleaner on when I got it) Ended up swapping heads and a
piston to
make it go again, but compression was uneven after that due to the
cylinder
wall score.
From: Teamamc <teamamc@xxxxxxxxxxx>
Subject: Poping 258 engine Any suggestions
To: mail@xxxxxxxxxxxx
Message-id: <007601c58b5c$0fa94210$6500a8c0@quicker>
I have an 81 Concord. 258 auto air.
At Idle the car gives off a poping sound through the carb.
If I pull number 6 wire the poping goes stops.
If I put the wire back on and rev the engine the pop turns into a
violent
bang through the carb.
I have changed plugs wire cap and rotor.
Adjusted timing. Compression is 145-150 across all cylinders.
It appears to be timing but I can't figure out whats left.
no matter where I put the distributor the pop is present.
With all 6 wires on the engine will idle.
As soon as you pop it in to gear the engine bangs and stalls.
If I remove #6 wire I can put the car in gear and drive it.
Any Idea's.
I am stripping the car but want to make sure the engine runs well
before
pulling.
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