Today we teardown a Bad Mercedes M270 2.0L Turbo 4 cylinder from a 2017 Infiniti QX30. The QX30 is simply a rebadged GLA250. This only has 67K miles and it is in TERRIBLE shape due to some quite questionable repairs. This is the very first M270 I've had on the channel so I was very interested to see how it was put together(and how it came apart). You can see why this terrible repair led to this engines demise and just how bad it got with such low miles. There's even a run video!
This engine can be found in MANY 4 cylinder Mercedes vehicles starting in 2013. Power outputs can vary, but this one produces 208hp and 258lbft of torque.
Why am I doing this? My name is Eric and I own Importapart. A full service auto dismantler. Part of our model includes dismantling blown up, failed and otherwise bad engines to salvage the good parts. We do not rebuild engines, merely supply parts to those who do!
TO BUY PARTS, visit www.Importapart.com OR email us at [email protected]
Every week I post at least one teardown video as I have over the last 3.5 years. Here are a few of my favorite videos from the past:
12V VW VR6 Teardown    • I FINALLY TEARDOWN A VR6! Volkswagen'...  
BMW M5 560HP S63 Teardown    • LOCKED UP 560HP BMW M5 S63Tu HotV Tu...  
GM L86 6.2L V8 Teardown    • EXPLODED! GM 6.2L LT1/L86 Gen5 V8 Eng...  
Nissan VC Turbo Major Failure    • Nissan VCTURBO BAD ALREADY? 2021 Rog...  

00:00 Intro
01:32 Engine Run Video
04:31 Fighting the intake pipe
05:34 Removing and inspecting the spark plugs
06:18 unplugging the engine harness
07:24 Unplugging the engine harness 2.0
08:44 Still, unplugging the engine harness 2.0
09:21 Removing the intake manifold and inspecting intake ports
10:46 Removing the oil filter. WHAT INTARNATION HAPPENED
13:20 Unbolting the oil filter housing. HOW COULD IT GET WORSE?
14:09 Removing all of the coolant and oil lines for the turbocharger
17:24 Zipping out the bolts that hold the exhaust manifold/turbo to the head
18:11 Turbo Inspection. Nope, wouldn't use that
18:58 Water pump removal and disection
20:46 Unbolting and removing the upper timing cover
21:48 Removing the fuel system, injectors, pump, rail
23:33 Peeling the valve cover off, first look at valve train. BAD
26:37 Pulling the camshafts out
27:39 How to remove the timing rail pins
28:53 Cracking the head bolts loose
29:33 Removing the cylinder head, inspecting pistons, bores and headgasket
31:56 SCIENCE
32:46 Unbolting and removing the lower timing cover and rest of timing system
34:58 Flipping the engine over to remove the oil pan
35:36 Peeling the oil pan off. ANTISIEZE EVERYWHERE
36:44 Removing and dismantling the oil pump
38:42 Pulling the balance cassette
39:10 First thorough look at the crank and big ends of the rods. ITS BAD
40:50 Unbolting the connecting rod caps and removing the rods and pistons
42:36 Zipping out the main cap bolts and pulling the crankshaft
43:29 Complete lower end inspection, connecting rods, bearings, crankshaft, block
46:52 Summary

I really hope you enjoyed this teardown as always, I love all of the comments, feedback and even the criticism. Catch you all on the next one!

Eric