Home » Public Forums » GMCnet » Engine performance Observation
| Engine performance Observation [message #84446] |
Thu, 13 May 2010 20:23  |
Oldngray
Messages: 544
Registered: August 2009
Location: Punta Gorda Florida
Karma: 0
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Senior Member |
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I changed the Ignition Module yesterday as noted in my earlier Post.
I was under the impression that the old one bit the dust "all of a sudden", now I am not so sure.
Our engine is a rebuild and installed by Jim Bounds,(Jasper?) has less than 5000 miles, the plug gap according to Jim is 45. It runs great, meaning, I thought it did. Smooth, trans feels like it only has one gear, shifting is not felt. We have driven it about 2200 miles, have not added any oil.
The Coach has been, while not hard starting, would take numerous revolutions to light off. When cold it would take perhaps 5 seconds of cranking before it would fire.
We could most times smell fuel while driving for about 5 or 10 minutes. This is with the old Module, and keep in mind, we are so new to the Coach we just assumed they were all like that. Fuel consumption has averaged just under 9 mpg since we bought it. We do not tow. I drive 55 normal and very seldom over 60.
I noticed today as well as last night, (did not think much about it last night) that the engine starts so quickly now that I almost do not have to turn the key <BG> Well you know what I mean, just bump the key and it fires. Also, no gasolene smell.
Could it be that the old module was on its last legs for some time now? If so, hard starting, long cranking time might also be a indication of the module going bad as well as unburned fuel.
I can't wait for another trip to check fuel consumption, the way it sounds is a world of difference from what it was. There is a test to see how much vibration a quality Table Saw makes, stand a nickle on edge and turn on the saw, I think I could stand a Nickle on edge on the air cleaner of this engine, well almost.
I know I am carrying on here so please forgive me, I just cannot get over how different a seemingly good running engine can be improved.
Richard MacDonald
Punta Gorda, Florida
Sold our TZE April 2015
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| Re: Engine performance Observation [message #84450 is a reply to message #84446] |
Thu, 13 May 2010 20:54  |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
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Senior Member |
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| Oldngray wrote on Thu, 13 May 2010 21:23 |
I changed the Ignition Module yesterday as noted in my earlier Post.
I was under the impression that the old one bit the dust "all of a sudden", now I am not so sure.
Our engine is a rebuild and installed by Jim Bounds,(Jasper?) has less than 5000 miles, the plug gap according to Jim is 45. It runs great, meaning, I thought it did. Smooth, trans feels like it only has one gear, shifting is not felt. We have driven it about 2200 miles, have not added any oil.
The Coach has been, while not hard starting, would take numerous revolutions to light off. When cold it would take perhaps 5 seconds of cranking before it would fire.
We could most times smell fuel while driving for about 5 or 10 minutes. This is with the old Module, and keep in mind, we are so new to the Coach we just assumed they were all like that. Fuel consumption has averaged just under 9 mpg since we bought it. We do not tow. I drive 55 normal and very seldom over 60.
I noticed today as well as last night, (did not think much about it last night) that the engine starts so quickly now that I almost do not have to turn the key <BG> Well you know what I mean, just bump the key and it fires. Also, no gasolene smell.
Could it be that the old module was on its last legs for some time now? If so, hard starting, long cranking time might also be a indication of the module going bad as well as unburned fuel.
I can't wait for another trip to check fuel consumption, the way it sounds is a world of difference from what it was. There is a test to see how much vibration a quality Table Saw makes, stand a nickle on edge and turn on the saw, I think I could stand a Nickle on edge on the air cleaner of this engine, well almost.
I know I am carrying on here so please forgive me, I just cannot get over how different a seemingly good running engine can be improved.
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Richard: So which module did you use and from where did you get it?
Since you had allready changed cap rotor and coil you could have had more issues and didn`t know it. Sure glad it worked out. Dixielanders are having a Rally in Dillard, Ga (Strawberries) July 8-11.. cutoff on reservations is June 8. Come on up... You did come to the last Rally I invited you to.....
C. Boyd
76 Crestmont
East Tennessee
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| Re: Engine performance Observation [message #84491 is a reply to message #84446] |
Fri, 14 May 2010 06:36 |
Oldngray
Messages: 544
Registered: August 2009
Location: Punta Gorda Florida
Karma: 0
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Senior Member |
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Hi Chuck,
I did try to figure out which one was the culprit by installing one at a time. The parts came from a spare GM Distributor, I have ordered a new module to replace the one I installed and will install it to make sure it is good as suggested.
Thanks for the invite, I sure would like to come up again but not in the cards right now. I sure hope to do it again though.
Richard MacDonald
Punta Gorda, Florida
Sold our TZE April 2015
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| Re: [GMCnet] Engine performance Observation [message #84582 is a reply to message #84527] |
Fri, 14 May 2010 15:36 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Steve,
WOW you must come from a rich family! My bank got fed pennies! ;-)
Regards,
Rob Mueller
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Steven Ferguson
Sent: Saturday, 15 May 2010 12:50 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Engine performance Observation
Good one. Kind of like those boxes we had as kids where you'd put a
nickle on it and a hand would come out of the box and snatch the
nickle.
--
Steve Ferguson
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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