Re: Poping 258 engine Any suggestions

[Wayne E LaMothe <superglider@xxxxxxxx>]

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. 
> 
> 
> 
> 

>