Watkins Glen NY Rally

M

marcus mcgee

New member
Sep 29, 1997
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Thanks Al. I really enjoyed the day and would have liked to have spent some
more time.

Marcus

> Marcus,
>
> I just read your email three days later about your coming to the rally.
> Glad to see you did come - I think you were number 35.
>
> Al Hamilton
 
Marcus,

I just read your email three days later about your coming to the rally.
Glad to see you did come - I think you were number 35.

Al Hamilton
 
elect ign module ??

gene

>I just got home, emptied everything out of the coach, had a cold beer and
>than got ready to drive it back into the storage garage about 3 miles away.
>Damn thing would not start, flooded! Finally after about 5 minutes of
>playing with it it fired, loud cannon bang, blew the muffler and tail pipe
>apart, started and than stopped. Started it up again now sounding like a
>B-17 going down the road adn 2 miles later, back fired again and quit never
>to start again. Towed it the last mile to the garage and put it to bed.
>
>tomorrow will find out what is wrong. any bets? Carb or timing chain?
>
>

>>Thanks Al. I really enjoyed the day and would have liked to have spent some
>>more time.
>>
>>Marcus
>>

>>
>>> Marcus,
>>>
>>> I just read your email three days later about your coming to the rally.
>>> Glad to see you did come - I think you were number 35.
>>>
>>> Al Hamilton
>>
>>
>>
>
>
Genef -- 77PB/ore/ca
GMC MOTORHOME INFORMATION
mr.erf
http://www.california.com/~eagle/
 
Tom,
Neither timing chain or carburetor. It's your ignition module. Good luck.
Bob McLaughlin

- -----Original Message-----
From: owner-gmcmotorhome
[mailto:owner-gmcmotorhome]On Behalf Of tom warner
Sent: Sunday, June 25, 2000 7:31 PM
To: gmcmotorhome
Subject: Re: GMC: Watkins Glen NY Rally

I just got home, emptied everything out of the coach, had a cold beer and
than got ready to drive it back into the storage garage about 3 miles away.
Damn thing would not start, flooded! Finally after about 5 minutes of
playing with it it fired, loud cannon bang, blew the muffler and tail pipe
apart, started and than stopped. Started it up again now sounding like a
B-17 going down the road adn 2 miles later, back fired again and quit never
to start again. Towed it the last mile to the garage and put it to bed.

tomorrow will find out what is wrong. any bets? Carb or timing chain?

>Thanks Al. I really enjoyed the day and would have liked to have spent
some
>more time.
>
>Marcus
>

>
>> Marcus,
>>
>> I just read your email three days later about your coming to the
rally.
>> Glad to see you did come - I think you were number 35.
>>
>> Al Hamilton
>
>
>
 
>I just got home, emptied everything out of the coach, had a cold beer and
>than got ready to drive it back into the storage garage about 3 miles away.
>Damn thing would not start, flooded! Finally after about 5 minutes of
>playing with it it fired, loud cannon bang, blew the muffler and tail pipe
>apart, started and than stopped. Started it up again now sounding like a
>B-17 going down the road adn 2 miles later, back fired again and quit never
>to start again. Towed it the last mile to the garage and put it to bed.
>
>tomorrow will find out what is wrong. any bets? Carb or timing chain?
>

I'll wager that it might be the distributor/coil/module. Hope that
it isn't the timing chain or cam.

Emery Stora
 
> Tom,
> Neither timing chain or carburetor. It's your ignition module. Good
luck.
> Bob McLaughlin
>
>
> I just got home, emptied everything out of the coach, had a cold beer and
> than got ready to drive it back into the storage garage about 3 miles
away.
> Damn thing would not start, flooded! Finally after about 5 minutes of
> playing with it it fired, loud cannon bang, blew the muffler and tail pipe
> apart, started and than stopped. Started it up again now sounding like a
> B-17 going down the road adn 2 miles later, back fired again and quit
never
> to start again. Towed it the last mile to the garage and put it to bed.
>
> tomorrow will find out what is wrong. any bets? Carb or timing chain?

Sure sounds like ignition to me also---particularly the backfiring/blowing
the muffler off part.

Could well be the module, but I'd also look closely at the wires coming out
of the magnetic pickup and going to the module. These wires have to flex
every time the vacuum advance moves, so they sometimes break. Since the
plastic insulation on the wire doesn't break, the broken wire continues to
make connection intermittently, thus it will run and cut out as the vacuum
advance servo twists the mounting plate within the distributor. Pull the
wires from the module and put an ohm meter on them while you wiggle them.
The resistance should not vary; if it does, replace the pickup coil.

Travis
 
Tom,
Could be the ignition module as a guess. Been there and DONE the
Mufflers the same way.

J.R. Wright
GMC GreatLakers
77 Eleganza II
Michigan

>
> I just got home, emptied everything out of the coach, had a cold beer and
> than got ready to drive it back into the storage garage about 3 miles away.
> Damn thing would not start, flooded! Finally after about 5 minutes of
> playing with it it fired, loud cannon bang, blew the muffler and tail pipe
> apart, started and than stopped. Started it up again now sounding like a
> B-17 going down the road adn 2 miles later, back fired again and quit never
> to start again. Towed it the last mile to the garage and put it to bed.
>
> tomorrow will find out what is wrong. any bets? Carb or timing chain?
>

> >Thanks Al. I really enjoyed the day and would have liked to have spent some
> >more time.
> >
> >Marcus
> >

> >
> >> Marcus,
> >>
> >> I just read your email three days later about your coming to the rally.
> >> Glad to see you did come - I think you were number 35.
> >>
> >> Al Hamilton
> >
> >
> >

- --
 
Tom,
Everyone seems to be pointing toward your ignition. I would agree.

I've been there and done that too in a simulation. I simulated an "intermittent
ignition module" one day when I turned the key off and then back on while
coasting at about 15MPH in gear. The resulting explosion blew the end of one of
my new mufflers right off onto the tail pipe. It was about as loud a noise as I
want to experience while sitting in the driver's seat of my GMC.

It did sort of sound like a B17 when I was finished with the experiment. I drove
about 200 miles that way and had to stuff my ears full of cotton to minimize the
sound on my ears. I'm told that John Wright heard me as I passed by Midland,
Michigan on the way to my house.

I did this experiment because I was trying to see the effects of low vacuum on
braking action.
Richard Waters

> I just got home, emptied everything out of the coach, had a cold beer and
> than got ready to drive it back into the storage garage about 3 miles away.
> Damn thing would not start, flooded! Finally after about 5 minutes of
> playing with it it fired, loud cannon bang, blew the muffler and tail pipe
> apart, started and than stopped. Started it up again now sounding like a
> B-17 going down the road adn 2 miles later, back fired again and quit never
> to start again. Towed it the last mile to the garage and put it to bed.
 
Tom,
I'd bet she's just pissed cause you didn't get her any Ragusa goodies!!!

Nate '75GB (Lovin' this weather, 72 and Sunny on my H-D) Omaha

>>
Re: GMC: Watkins Glen NY Rally

tomorrow will find out what is wrong. any bets? Carb or timing chain?
 
>Nope she got a full dose of Ragussa goodies a step, final drive cover and
>tranny cover.
>
>Turned out to be a bad coil. I still dont understand it.Changed the ignition
>module first and nothing, installed the new coil and fired instantly.

What did I win Tom?

I had a coil go out on a trip once. Troubling to find as it only
went out when it got hot. Would run fine when first started but then
cut out later. By the time I got the hatch open and the distributor
apart it checked out fine by the test method shown in the maintenance
manual. Only found it after changing out the cap, rotor, module and
pickup coil first. The only thing left was the coil that had checked
out OK. Things worked fine after I replaced that coil.

Emery
 
Tom,
That's a lot better than timing chain problems. Glad you found it and it
wasn't that serious.
Bob McLaughlin

- -----Original Message-----
From: owner-gmcmotorhome
[mailto:owner-gmcmotorhome]On Behalf Of tom warner
Sent: Monday, June 26, 2000 5:33 PM
To: gmcmotorhome
Subject: Re: GMC: Watkins Glen NY Rally

Nope she got a full dose of Ragussa goodies a step, final drive cover and
tranny cover.

Turned out to be a bad coil. I still dont understand it.Changed the ignition
module first and nothing, installed the new coil and fired instantly.

>Tom,
> I'd bet she's just pissed cause you didn't get her any Ragusa goodies!!!
>
>Nate '75GB (Lovin' this weather, 72 and Sunny on my H-D) Omaha
>
>>>
>Re: GMC: Watkins Glen NY Rally
>
>tomorrow will find out what is wrong. any bets? Carb or timing chain?
>
>
>
>
 
>Em i first replaced the module and when it did not start right up changed
>out the coil. It now fires as soon as the key is turned on something it has
>never done. Substitution of these parts is the best method and why I always
>keep a new spare.
>
>tom

I have always carried a spare module, cap and rotor but after the
time I had the problem with the coil I now also carry a spare pickup
coil and a spare coil. You never know when they will go and I am
sometimes travelling 100 miles or so from the nearest town,
especially when in southern NM, Colorado or AZ.

This is something that every GMC should pack as spares. Over the
years I've had two modules fail on the road, two pickup coils and one
coil. Except for the time that I didn't have the main coil, I've
always been able to repair it by the side of the road and be on my
way within about an hour.

Emery Stora
77 Kingsley
Santa Fe, NM
 
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