Hello All,
I just joined the list...
The backfiring and fouled plugs sounds a little like one of the pistons in a
carb is getting stuck.
Pull the air cleaner manifold off, then remove the dash pot covers... then
lift each piston and see if it drops back down.
I had this happen to me recently while getting the car going after 7+ years
of sitting in storage. I pulled the cover off and polished the mating
surfaces with 0000 steel wool, then blew off the parts to remove the steel
wool filings and reassembled. Don't forget to refill the dash pots with oil.
I did lift the piston one more time after putting on the air cleaner
manifold to check to make sure the piston dropped... all better now.
Blair
----- Original Message -----
> From: Bob Howard <mgbob@juno.com>
> To: <mrazor@mis.net>
> Cc: <mgs@autox.team.net>; <mg-t@autox.team.net>
> Sent: Saturday, September 01, 2001 5:31 PM
> Subject: Re: MGTD
>
>
> > Mike,
> > Was this the first start after a rebuilding, or after a long period of
> > disuse?
> > Was it running OK before the new points, condenser etc? Unlikely as
it
> > seems, I experienced three new defective condensors at one time. Let's
> > hope I bought and destroyed all of a bad run. They sure caused me grief.
> > Have you double-checked wiring to plugs, 1 3 4 2 as the distributor
> > rotates anti clockwise?
> > A timing light clipped to each wire in turn can help identify one plug
> > that is shorted and not firing.
> > Have you any reason to suspect that the camshaft timing has
> > changed--new cam, new chain, new pulleys, etc?
> > If you are sure ignition is good and valves are adjusted, look for air
> > leaks in the carb and intake manifold connections. Once the engine
> > starts, you should be able to push in the choke within a few seconds of
> > starting, so (assuming electrics are OK) it could be lean mixture.
> > Are the dashpots filled with oil?
> > Playing the gas from an unlighted bernz torch around the gaskets is a
> > way to check for intake leaks. Gas that gets sucked in will raise idle
> > speed. Look for loose plugs in the ends of intake manifold--a backfire
> > can sometimes pop a plug loose or out.
> > Good luck-two more days of Labor Day weekend to go TD driving.
> > Bob
> >
> >
> >
> > On Sat, 1 Sep 2001 10:02:42 -0400 "Mike Razor" <mrazor@mis.net> writes:
> > > Hard to start first time. Have to choke it to start until it warms
> > > up. Sounds more truckish than like an MG. New points, condenser,
> > > plugs, rotor, coil, checked timing and it was ok, was fouling plugs,
> > > leaned it out and does not appear to be fouling them anymore.
> > > Everything was gas fouled, to include the oil, changed that as well.
> > > Runs much better, but still not real good, has to warm up before it
> > > will really run right, will miss and backfire under load until it
> > > has
> > > run for a while. Has a intermittent miss and sometimes idle will
> > > stay
> > > high until I bump the gas pedal. Am lost as to what else to do or
> > > look for.
> > > THANKS!
> > > MIKE R
///
/// mg-t@autox.team.net mailing list
///
|