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. > > > > >