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Old 09-19-2019, 09:24 PM   #1
Ga3741
 
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Default Is a new engine a major red flag?

So I am looking at purchasing a 2015 170 and just found out that the owner(or one of their employees) accidentally put gas in the engine instead of diesel. The owner had a new engine installed with warranty but I wanted to feel it out from the experts to see if this should be a major red flag or if there are any other things to look out for in this situation. Van only has around 40k miles on it and around 1000 on new engine. Owner doesnít need it anymore and thatís the reason for sale. Iím still waiting to who find out who did the install, mb dealer or joe blow in his garage, and also what the warranty is but figured Iíd get the ball rolling here.

Let me know your thoughts. Thanks.
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Old 09-19-2019, 09:51 PM   #2
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Default Re: Is a new engine a major red flag?

Itís probably a crate engine which should be perfectly fine. But I would ask if you can purchase a extended warranty up to 150 k miles!!! Just my two cents


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Old 09-19-2019, 10:41 PM   #3
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Default Re: Is a new engine a major red flag?

That’s kind of what I was thinking too but wanted to make sure this wouldn’t lead to and other problems down the line. Any other thoughts on this or any other things that I should think about before laying the $$ down?
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Old 09-20-2019, 12:18 AM   #4
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Default Re: Is a new engine a major red flag?

Yes major red flag run away fast: the heat will do a lot of damage that you can't see untill the dash light up.

Ask me how I know... could even burn holes in the inter cooler.
The DPF and more all very expensive.
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Old 09-20-2019, 12:48 AM   #5
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Default Re: Is a new engine a major red flag?

Is that stuff that a mechanic could tell when doing a prebuy?
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Old 09-20-2019, 01:10 AM   #6
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Default Re: Is a new engine a major red flag?

Quote:
Originally Posted by flyag1 View Post
Yes major red flag run away fast: the heat will do a lot of damage that you can't see untill the dash light up.

Ask me how I know... could even burn holes in the inter cooler.
The DPF and more all very expensive.
What heat problem is involved in a replaced engine?
None
I believe they are joking or misunderstood
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Old 09-20-2019, 01:36 AM   #7
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Default Re: Is a new engine a major red flag?

So what would the main concerns be with a replaced engine due to gas in the Tank? I really want to make this deal since Iíve been looking for a sprinter ever since we sold our SMB earlier this year but I donít want to do something stupid that Iíll regret in a few months on the side of the road somewhere! Thanks for the help
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Old 09-20-2019, 01:31 PM   #8
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Default Re: Is a new engine a major red flag?

Need to make sure tank was drained and flushed as well as fuel lines. Replacing the engine will take care of take care of the other possible problems - IF it was an actual engine replacement, i.e. crate engine like SV said. If they went with long block or short block rebuild and called it a "replaced engine" the possibility of problems induced increases.

So clarify what they mean by "replaced engine" first. Depending on the source of the engine, Dennis recently indicated in a post an order of preference with MB as top, then Jasper as second best.

If the replacement is of good quality, then take the van to a MB dealer or quality independent for inspection including putting it on Xentry or other high end scan. Expect to pay at least an hour of shop time maybe 2.

None of this guarantees no problems, it just makes them a somewhat less likely.
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Old 09-20-2019, 02:51 PM   #9
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Default Re: Is a new engine a major red flag?

Pass. Selling after 1k on a new engine because he doesn’t need it anymore? Sounds like BS. If a relatively new engine was completely decimated due to the wrong fuel, I can’t imagine the remainder of the systems that weren’t likely replaced are in top condition for the overall vehicle mileage. Reads on the surface he’s looking for someone to dump his problems off on. Why bother? There are so many of these vans for sale now. Maintenance is where the real costs can be on these vans, not the purchase price, so whatever you think you’re saving here is high risk that you won’t keep it long term.
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Old 09-20-2019, 03:06 PM   #10
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Default Re: Is a new engine a major red flag?

Just curious here: what happens when gasoline is used in a diesel? How long will it run? How does it run? Is there a period of time where the gasoline can be drained and cleaned out before serious damage occurs and what is the serious damage?
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