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Old 07-31-2005, 05:03 AM   #1
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We have a 2003 Mountain Aire. For the first 20,00 miles we were burning spark plug wires, insulators and spark plugs. Apparently the engine compartment was too enclosed causing too much heat. They finally added maniford heat shields and two ventilation tubes that seem to have taken care of the heat problem. However, I have developed engine noises that happen every time I first start the engine for the day. They last for about a minute and a half. They sound like lifters and piston slap. These noises were not there when I first purchased the coach and they are getting louder and lasting longer. Has anyone else had these heating or noise problems?
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Old 07-31-2005, 05:03 AM   #2
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We have a 2003 Mountain Aire. For the first 20,00 miles we were burning spark plug wires, insulators and spark plugs. Apparently the engine compartment was too enclosed causing too much heat. They finally added maniford heat shields and two ventilation tubes that seem to have taken care of the heat problem. However, I have developed engine noises that happen every time I first start the engine for the day. They last for about a minute and a half. They sound like lifters and piston slap. These noises were not there when I first purchased the coach and they are getting louder and lasting longer. Has anyone else had these heating or noise problems?
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Old 07-31-2005, 07:37 AM   #3
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rver1776 Welcome to irv2
The topic of piston slap has been covered alot on this site if you go to "find" above you an type in "piston slap" you will get all this info. Maybe it will help you with your problem. "007"
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Old 08-01-2005, 04:18 AM   #4
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I understand that some engines have "normal" piston slap, my question is if it is normal why wasn't it there in the beginning and could the excessive heat cause it and the lifter noise?

These noises are lasting longer and getting louder
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Old 08-01-2005, 07:21 AM   #5
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by rver1776:
I understand that some engines have "normal" piston slap, these noises are lasting longer and getting louder </div></BLOCKQUOTE>rver1776, I suggested in a PM to you that if the noises become more pronounced and lengthy in duration that a visit to your authorized Workhorse Service Center would be the best course of action.

It is highly unlikely that heat build up from routine operation of your engine while driving your motorhome would damage the mechanical components of the engine.

If there is a pronounced noise in the engine that won't go away, this is a problem. You need to have this checked by a service center.

If the service center that you are working with doesn't respond appropriately in your opinion to your request, you can always go to another center by calling customer support as a second option and or opinion.
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