Sterling57
Chicago Burbs
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Joined: 03/19/2009
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This is why I love this site. Always someone listening. Always helpful. Thanks. I'll post the results as soon as I can.
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bsinmich
Holland, MI
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Joined: 11/18/2000
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You will get good info from the OEMY site that was suggested earlier. He also has a WH chassis on his MH and has gotten together many difficult to locate parts that we can all use.
2003 Newmar Mountain Aire, Workhorse W22, 2008 Saturn Vue, Falcon 5250, & US Gear Unified Tow Brake
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Sterling57
Chicago Burbs
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First off, thank you to all that replied with advice. The resolution ended up being new plugs (5 & 7 were cooked) and new wires, same cylinders. Supposedly these will not fall prey to the same problem as they have insulation to prevent the problem. I will be putting another 1200 miles on the coach over the next few days so we will see if they knew what they were talking about. If not, I will be installing the cooling kit.
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booty51
houston
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Joined: 12/11/2007
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If you have a misfire you milage should sink as well. Do you have a feel for what kind of milage you have been getting or is this the maiden voyage? Stop at an AutoZone Auto parts they will hook up a code reader for you for free. It should tell you what cylinder is mis firing . I just had that problem .
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lfeather
Titusville, FL
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Joined: 08/03/2001
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rgatijnet1 wrote:It is a very common problem with those engines for the rear spark plug wires to fail because of heat. Some of the coach manufacturers do not provide enough airflow to keep the engine compartment as cool as it should be.
I would recommend this wire set to eliminate any future problems from spark plug wires. Taylor Extreme plug wires
Ditto. I had the same symptoms with my previous 8.1 and found #5 spark plug lead burned and arcing. Get some strong ignition wires.
Larry, Debbie, Tiki and Tomi
USAF Retired
2003 36' Country Coach Allure #30856
2008 Tacoma Towed
SMI Air Force One toad brake
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Sterling57
Chicago Burbs
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1st leg of the return trip complete. The coach ran like a dream & the MPG increased by @ 1.5. Hope this keeps up
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texasrat
Las Crusas, NM USA
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Joined: 12/18/2004
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Sterling57 wrote:First off, thank you to all that replied with advice. The resolution ended up being new plugs (5 & 7 were cooked) and new wires, same cylinders. Supposedly these will not fall prey to the same problem as they have insulation to prevent the problem. I will be putting another 1200 miles on the coach over the next few days so we will see if they knew what they were talking about. If not, I will be installing the cooling kit.
Gosh
I sure hope you did replace all the spark-plugs and wires, not just 5&7.
TR
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