leeroytandy

My clk350 won't start. Found that the #52 fuse was burnt out. Replaced it And it burnt out immediately. Replaces it with a 25amp fuse and all I hear is a click sound from the starter, but the engine doesn't turn. I haven't taken it for scanning yet.
I bought it an auction and initially the spark plugs had been removed. Not sure if this was due to theft or if there was something wrong with the engine. please help!!!

Rudeney

It could be a starter problem, but it could also be that the engine is seized (given that the spark plugs were removed like someone was trying to look into that). Anyhow, I'd try rotating the engine manually. Especially with the spark plugs remove, that should be easy with a ratchet on the crankshaft harmonic balancer bolt.

Glyn M Ruck

+1^ Fuse 52 was underated at 15 amps. s/b upgraded to 20 amps. Do as Rudeney suggests. Fuses 31, 52 & 57 have to be in good order to enable start.

https://mbworld.org/forums/clk-class...te-20-amp..pdf

https://mbworld.org/forums/c-class-w...t-process.html

leeroytandy

Tried rotating the engine manually. Very little movement and very hard difficult aswell. So worst case scenario is that the engine has seized. I've also found out that if water has entered the engine then it could be that a rod could be bent. Are there any other possibilities?

Glyn M Ruck

Bent valves are another possibility. If the engine won't turn over relatively easily with the plugs out then you had better take the heads off & have a look.

leeroytandy

Thanks Rudney & glyn
Would any of you know where i can buy another unit at a good price. Im in Johannesburg

Rudeney

Sorry, I can't help with recommendations in Johannesburg, but if the engine doesn't rotate easily with the plugs out, something is definitely wrong. When I did my transmission fluid and filter service, I had to rotate the engine to line up the torque converter drain with the access port and I did this without removing the plugs. I was able to use 1/2 inch ratchet wrench and do it with one hand, though I could feel the resistance of engine compression. Maybe you need to use an inspection scope in the spark plug ports to see if there is anything "odd" going on in the cylinders like bent valves. One thing I have heard of happening is that the intake manifold parts can break off and get lodged in the cylinders and cause havoc.

leeroytandy

Thanks Rudney. Will try that today

Glyn M Ruck

Yes you can try a boroscope inspection & see if you can find the cause.

You can see if Japan Auto in Boksburg can import a low mileage engine for you or troll the breakers yards.

leeroytandy

had the machanic come in and take a look at it. found that the dipstick which i thought was the gearbox dipstick was actually the engine dipstick. The oil in the sump was mixed with water. but the oil on the oil cap didn't show any sign of water oil mixture. this means that the car was probably driven into water . the good thing is that the engine is probably not siezed.

worst case scenario is that a valve or con rod could be bent. repairs including parts shouldn't cost me more than ZAR7000.00

Ive been checking up on the rest of the car . The drivers side head rest doesn't work
passanger seat doesnt flip over to allow for the passaengers to get in.
drivers side fender and front bumper not in good condition
How possible is it to upgrade the sound system (command) looking for one with bluetooth

Glyn M Ruck

Is your car prewired for cell phone? Most that came to SA were. You just need to buy the Bluetooth puck if you have the plug in the console under a cover. About R3000

leeroytandy

Nope nothing like that in there are there any after market products? . And the CD cartridge is missing as well
I also noticed that there is no longer a first aid kit, or should there be?

Rudeney

A very good aftermarket Bluetooth solution is the mCAR module:

http://www.ebay.com/itm/Mercedes-04-08-4in1-Bluetooth-Handsfree-USB-iPhone-iPod-Streaming-Audio-kit-/271411511235?pt=US_Bluetooth_Handsfree_Car_Kits&hash=item3f3162ffc3
I have this in my CLK and it's a bargain for giving both iPod and BT integration.

Glyn M Ruck

Are you talking about the cartridge in the glovebox player? Readily available at Sandown Motors.

Yes there should be a first aid kit. LHS of boot held by a velcro strap.

leeroytandy

Hi guys. Saw that one in another post that you posted. Been looking for it but no luck.

clydem

My 2005 doesn't have the control panel in the radio. It does have a 5 disk (6?) changer CD. Does yours have the panel? if not, how does the unit interface? I do see on their site it works with a 2005.

leeroytandy

So yetserday we removed the heads and found alot of water in the system

https://mbworld.org/forums/attachmen...1&d=1394256453
https://mbworld.org/forums/attachmen...1&d=1394256453

so the mechanic suggested we take thet Cylinder heads in for refurbishing. we've spray a rust penetrator on the pistons in the hope that it loosens them. the crank definitely hasnt siezed because we found alot of oil (mixed with water) in the sump (10L). our assumption is that the car stalled when water got in and didn't start again. if thats the case then theres probably nothing hectically wrong with the con rod and pistons except that the ruct build up could've caused the engine to get stuck.

so today we'll try turning it .
your suggestions and advice would be appreciated. thanks guys

Glyn M Ruck

The rust is from the rings. The bores are Alusil. It takes a hell of a lot to bend rods on these engines. Yes a hydrolock can do it. It certainly looks as though this engine ingested water.

Clean up the heads & have them trued.

As yours is an 06 I would do the balance shaft sprocket inspection & replacement if necessary while you are in there.

Then reassemble.

Glyn M Ruck

https://mbworld.org/forums/clk-class...ssues-dtb.html

leeroytandy

Thanks Glyn. Took a look at the engine numbers and it looks like mine isn't in the range. 2729....30......6016. But for safety sakes I'll open it up and check anyway.
So I would need to remove the block and send it to the engineers to have it trued? Would also be advisable to replace the rings?
If that's the case wouldn't it be advisable to look for another engine?

Glyn M Ruck

No. I'm sure the block will be fine. Just check the heads are true before refitting. This is one very stiff block.

I would not do rings unless you have to pull the block. If you don't have the dreaded sprocket problem then that's great!

The success of this job revolves around doing it economically. Working on Benz engines can get very expensive very quickly in SA. Don't fix what is not bust.

leeroytandy

Same thing my mechanic said. Thanks

Rudeney

What is that exact engine serial number? If it's "272.9xx 30 006016" then it is in the affected range. In the "30" series, all M272's up to 468993 are affected by potential balance shaft failure. And I have yet to see a MY2006 M272 that isn't. yours may be fine, but the parts are not very expensive and since you have the engine pulled, you might as well do that job. I'd hate to put all the effort into rebuilding the engine only to have that sprocket fail 10K miles later.

leeroytandy

Oh! damm. Rodney you're actually right. will open up the engine tomorrow. and take a look at the sprocket

Sublime5000

Havnt read through all these replies but other than the engine possibly being locked up u might have a short somewhere causing that fuse to blow on you def check the wiring to the starter could be a problem with the ground