Fw:Re: Poping 258 engine Any suggestions
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Fw:Re: Poping 258 engine Any suggestions



That would account for the even compression figures. Ex gases would be blown back into
the intake manifold on the intake stroke, creating noises and upsetting the carby.


Geoff
----- Original Message ----- From: "Wayne E LaMothe" <superglider@xxxxxxxx>
To: <mail@xxxxxxxxxxxx>
Sent: Tuesday, July 19, 2005 2:35 AM
Subject: *****SUSPECTED SPAM***** Re: Poping 258 engine Any suggestions



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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