Mercedes ML320 Glow Plug Replacement P0670 - MB 2270-4 OBD errors Check Engine CEL

[@Elevatevisiondigital]

Thanks for the video, wasn't too bad of a job once I located each glow plug! That last one on tbe drivers side closest to the firewall, the black plastic harness bracket slides out, you have to push the 2 plastic pins at the same time and it lifts up, making it a bit easier to get to that last glow plug!

[@danieljames7752]

Hi, Your video is superb and very detailed. I have a few questions just to sort of summarise. What are the torque values for the glow plugs? What is the paste you're using on the connectors ? Most diesel engines seem to have some sort of horror story in regards to plugs snapping, it would seem that with a good penetrative fluid and a warm block they come right out. Thank you again.

[@MalarkeyTaylor]

Thank you for watching! The torque values are about 14 Ftlbs on the glow plugs. this may differ for some but that's what I found as the recommended. its not much! The paste on the glow plugs themselves is copper anti- sieze - amzn.to/3RStDES The paste on the glow plug wires/connectors is 'dielectric grease' amzn.to/3taxTFx Glow plugs are a mixed bag. most of the time with a Steel head or a really rusty engine they can get really bad, and with soot build up on the tip or melted tips they can be quite a headache to remove. But this engine is an aluminum head and has very little corrosion so they all came out just fine, I think getting to them while they are hot is a really good way to do it. The anti-seize should also help if there is ever a next time.

[@danieljames7752]

@MalarkeyTaylor Hi, Finally, I got around to replacing the glow plugs and relay. Such a simple & and straightforward task, well apart from cylinder 6, a little tight to get the socket in and plug connector back on. I used seafoam penetrant spray, and it really really helped. As you suggested, I took the car out for 30 minutes to get some real heat in the block. Thank you again.

[@luisfernando-mm3jt]

Nice work...Gonna do the same thing next week .What is the grease you are using?Thanks

[@MalarkeyTaylor]

Oh, That's not grease, That's copper based anti-seize (can be found here amzn.to/3GIVJvv ) This is to help prevent any corrosion or difficulty getting them back out later in its life.

[@SaultiBalldeip]

Have you tried your Autel on the ISM module? If so, what is the extent of its functionality? Considering buying one but I wanted to make sure it has decent functionality for MB vs being more generic. Cheers

[@MalarkeyTaylor]

I have used it to control and test a few different modules on the car. But I have not had a need yet to see if it can control the ISM. Overall it has been able to view and read almost all the info I’ve needed so far.

[@SaultiBalldeip]

@@MalarkeyTaylor okay, so it's definitely a good alternative to buying one of the Xentry or star systems that are sold on AliExpress etc? I just recently had the ISM issue on my 2007 ML350 so I'm trying to figure out what to get/invest in versus spending the same amount or more to bring it in and have somebody do the same thing for me. Cheers

[@MalarkeyTaylor]

@@SaultiBalldeip I have not tried the xentry knock off systems from Ali, I get the impression they can do more but also run the risk of being unable to use them if they somehow got unlicensed. This autel can do A LOT. like controlling the turbo and lights and testing functions. I would say it's likely to be able to read the system. the only things it can't seem to do is re-key the car, or TPMS sensors. and it doesn't seem like it can modify the TRP settings for theft relevant parts. but over all I'm pleased with its function.

[@fixingproblems3183]

Why did you place the controller ?

[@MalarkeyTaylor]

The controller voltage has to match the glow plug voltage. There are some after market glow plugs that run a higher voltage than the factory ones. I was not sure when i started what voltage the old plugs were, so I bought a kit that included the controller and all 6 plugs so I would not have any compatibility issues.