Re: [Amc-list] no guts in the 287

[Wrambler242@xxxxxxxxxxx]

I've only seen a few that ran with a jumped chain.
just enough to know that they'll leave you scratching your head.
Most of them have caused a quite bit of grief before they are torn down "just to check to be sure".
It just seems so absurd that the chain can jump one tooth then stay there. 
I don't recall if Dave mentioned if he had the dist out and started from scratch on timing or if it was still in place. If it was in place and he had to do a bit of repositioning to get it running then that might be a pretty good indicator that it has jumped. If he had to install the dist then there is no easy way to be sure.

--
Mark Price
Morgantown, WV
1969 AMC Rambler, 4.0L, EFI, T-5

 -------------- Original message ----------------------
From: Ken Ames <ameskg@xxxxxxxxx>
> When my 68 AMX 343 jumped 2 teeth it wouldn't idle at all unless you moved the
> distibutor a whole lot. Even then it was sputter sputter.
> 
> Ken Ames
> 
> 39Master85w.partscar,67Marlin,68AMX,70Machine,73Matador2drht,73Hornet4dsd,
> 73-74-75-76GremlinXs,75PacerX,76Hornet2dsd,77Matadorcpe,2-77AMXs,78AMX,
> 78Gremlin,78GremlinGT,79Concordhb,79PacerDL8,2-79AMXs,2-80AMXs,
> 2-80SpiritDL,80Eagle4dsdn,2-81SX4s,81SpiritGT,81Concord4dsd,82Eaglesw,
> 2-85Eaglesw,80J20,85J10,88Eaglesw,85Sentrasw,89Sentra4dsd   (40)
> 
> AMCA = http://clubs.hemmings.com/amcalberta/
> 
> 
> 
> Quoting "Graham, George W (GE Infra, Energy)" <george.graham@xxxxxx>:
> 
> > I once had a '57 Chevy with a high-mile 283 in it with exactly these
> > symptoms.  Turned out to be the timing chain had jumped only one cog on
> > the cam gear, and stayed there.  I guess one cog is enough to get the
> > valve timing hosed up enough to have no guts, but still idle somewhat
> > OK.
> > 
> > Later on I had another car come into my shop (a Pontiac Lemans) with
> > these same symptoms -- turned out to be the same thing once again (junk
> > nylon-covered gears!!).
> > 
> > George Graham
> > AMC of Houston
> > 
> > -----Original Message-----
> > From: d stohler [mailto:das24rules@xxxxxxxxx] 
> > Sent: Thursday, May 17, 2007 8:54 PM
> > To: amc-list@xxxxxxxxxxxx
> > Subject: [Amc-list] no guts in the 287
> > 
> > well, i have found that the timing advance is shot. i am not positive
> > however if that is the cause of all my problem. im doubting it. it idles
> > fine, and in neutral or park, it rev's just fine. put it in gear, it
> > still idles, but you try to give it any throttle, and it wont pick up
> > rpm's. you keep giving it more throttle, it will bog down and barely run
> > and occasionally die.
> > i know the timing has a little to do with it. if i twist the dist. cap a
> > little while giving it throttle off the carb, idle does pick up a
> > little. this with the park brake on and front wheels chocked. rear
> > wheels off the ground. when i take the park brake off, the wheels spin
> > fine. shifts thru all gears just fine.
> > tells me it should not be the trans. anyone have any clues? 
> > 
> > dave stohler
> > http://picasaweb.google.com/das24rules
> > 
> > 
> >        
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