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Diesel Conversions Convert gas to diesel, or convert to a 6.2/6.5/Duramax/Cummins/Navistar/Isuzu/Perkins/Detroit/or ... diesel engine. Go here to see completed projects, works in progress, share your conversion or ask the experts.

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Old 06-19-2018, 04:46 PM
Jonesy55 Jonesy55 is offline
Join Date: Jun 2018
Location: Lorain Ohio
Posts: 1
Default Detroit 638

Going down the road about 70 blew oil line in seconds light came on changed oil line filled oil start has no power no oil light engine is loud not a loud knock
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Old 06-20-2018, 08:14 AM
DmaxMaverick's Avatar
DmaxMaverick DmaxMaverick is offline
Join Date: Apr 2001
Location: CA
Posts: 12,192

Welcome aboard!

(Much) more information would be helpful. Such as what, exactly, does the noise sound like, when it occurs (idle, load, compression, cranking), current oil pressure (compared to previous), and exhaust smoke condition (compared to previous). You may have dodged a bullet and the problem is a failed turbo (if it has one), or it may be more serious. I suggest checking the turbo first (disconnect the plumbing and run it N/A). If it doesn't have a turbo, more serious internal engine damage is likely.

If you don't already know, the 638 is an Italian VM engine with DD badged valve covers. If you need more info, look to VM guides specific to your engine. There were many different configurations, depending on the original application and production year.
1985 Blazer 6.2
2001 GMC 2500HD D/A
2014 Chevy Cruze Diesel - Fabulous car, no problems at all, but sold Nov. 2016 @ 55K miles.
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