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Old 08-30-2013, 06:00 AM   #1
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1991 33' Land Yacht
Warren , Ohio
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454 trouble

Just back from CA trip 5285 mi with motor problems. Began losing oil at the rate of 4 qt per 1000. I say losing because the motor did not seem to be burning oil. The bottom and lower sides became coated with oil, mostly on the passenger side.
I am having difficulty finding someone to work on the motor or possibly replacing the 454.
I really don't know the extent of the problem, could be a head gasket failure or warped head, so I am told.
Visited Chevy dealer in Akron, OH told I would be looking at between 9 and 10 K for a replacement. I don't know if that is a good quote or not. I just got the feeling that if they looked at my coach the engine was going to need replaced. The coach has 70000 on it. I need someone to check this out. I live in NE Ohio and can travel to a shop almost any ware in the East. Any help, suggestions, or recommendations would be great.
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Old 08-30-2013, 06:17 AM   #2
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I would discuss repair first. You should be able to get new heads, gaskets, etc..
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Old 08-30-2013, 07:33 AM   #3
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Did you notice any lose in power? I may simply be a leaking valve cover or a PVC problem. I'd clean the engine and see where the oil is leaking from first.
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Old 08-30-2013, 07:41 AM   #4
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Most likely explanations don't warrant engine replacement. Find the leak first. It's a big one, so it should be easy to find - valve cover gaskets, intake manifold gaskets, PCV, oil filter, etc.
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Old 08-30-2013, 07:42 AM   #5
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Did you notice any lose in power? I may simply be a leaking valve cover or a PVC problem. I'd clean the engine and see where the oil is leaking from first.
Yeah... Clean and diagnose. I am guessing if on outside it is a loose or missing valve cover gasket. Especially if still running well.
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Old 08-30-2013, 07:44 AM   #6
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1988 25' Excella
Trumbull , Connecticut
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454 Replacememt

Hello fellow streamers. Last year I had the 454 in my 89 GMC 3500 replaced with a Barnetts remanufactured motor. It was a 4 bolt main long block, meaning it was complete except for the accessories like water pump, alternator throttle body, ect. It cost me about $4500 at that time, complete including installation.
Motor home may be more due to the way they are mounted in the MH.
My original 454 was damaged when I had the radiator replaced and the shop didn't tighten up the lower oil pipe fitting going to the oil cooler in the radiator and I lost all my oil while traveling down I95 in Rhode Island.
I pulled off as soon as I saw the oil pressure at zero and the camper following me stopped and then went for oil. I called AAA but they would not bring me oil ( against policy to deliver oil). Put in oil and proceded but with in about 30 miles it really started to knock nut made it to camprround but did I get looks from bystanders when they heard that knocking truck go by. The shop made good on replacing the motor and thats what I pull my 88 Excella with. So maybe the shops quote was not far off but shop around.
That 454 is a strong motor.
Good luck happy camping nm1oqrz
Quote:
Originally Posted by johndes View Post
Just back from CA trip 5285 mi with motor problems. Began losing oil at the rate of 4 qt per 1000. I say losing because the motor did not seem to be burning oil. The bottom and lower sides became coated with oil, mostly on the passenger side.
I am having difficulty finding someone to work on the motor or possibly replacing the 454.
I really don't know the extent of the problem, could be a head gasket failure or warped head, so I am told.
Visited Chevy dealer in Akron, OH told I would be looking at between 9 and 10 K for a replacement. I don't know if that is a good quote or not. I just got the feeling that if they looked at my coach the engine was going to need replaced. The coach has 70000 on it. I need someone to check this out. I live in NE Ohio and can travel to a shop almost any ware in the East. Any help, suggestions, or recommendations would be great.
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Old 08-30-2013, 07:48 AM   #7
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If she was running fine otherwise and not smoking, at just 70k on the engine it is very unlikely you'll need to replace it. You've just driven a lot of miles, so plenty of time for a few nuts or bolts to work loose. Could be as simple as one rocker cover slightly loose. At the rate you are losing oil, I think it should be easy to find the leak. Check this out, as being cheaper than 10k for a new engine.
Using UV Dye to help find a oil leak - YouTube
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Old 08-30-2013, 09:26 AM   #8
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Well I think you've got a consensus...FIND THE LEAK!

A well running 70k 454 deserves to stay on the road.

Clean and check well.

First place I'd look... the oil filter.
If the oil has been changed recently the the old gasket may have stuck the the block, now you've two squished gaskets, pressure builds and before you know it you got a oil sprit.

Bob
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Old 08-30-2013, 11:38 AM   #9
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Being that it is on the passenger side and low, first place to check would be valve cover gasket, then the dipstick tube at the lower end. Cover the alternator, pressure wash, if you can't see leak try a leak dye.
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Old 08-30-2013, 11:59 AM   #10
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Finding the right mechanic if you don't want to do this yourself can be a challenge, but there has to be one in Akron. Somebody other than the Chevy dealer is keeping all those delivery vans running, and they can work on your rv. When we were in Delaware we found a gem (Stokes Garage in Wilmington, family owned since 1948) by researching online reviews like Yelp.
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Old 08-30-2013, 12:52 PM   #11
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The main concern is did you loose oil pressure?

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Old 08-30-2013, 05:49 PM   #12
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Thank you all

I did not loose oil pressure, I did change oil and filter before the trip and the coach ran fine through all the loss of oil. Of corse I keep dumping it in. At no time did the coach over heat even threw some pretty serious hills.
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Old 08-30-2013, 06:16 PM   #13
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I did not loose oil pressure, I did change oil and filter before the trip and the coach ran fine through all the loss of oil. Of corse I keep dumping it in. At no time did the coach over heat even threw some pretty serious hills.
I bet motor ok.

Take a few cleanup days, reload with oil then fire up and carefully observe for leak.

Careful you don't get near moving parts.
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Old 08-31-2013, 07:22 AM   #14
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Another likely source would be the oil cooler lines.
Had one leak on our 454 Burb at about the same milage. Replaced them and installed a remote filter with temp gauge.

Bob
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