E55 AMG W211 2004

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ama singh

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Is their any test I can do to visualise the fuel injection spray from the injectors while they are all on the fuel rail, to get an indication?
 

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You could try, but you won’t get close to a specialist with an ASNU test bench. They can pressure test and run them through their full duty cycle whilst measuring the fuel spray pattern and output. It’s not even expensive!
 

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I think you should investigate every possible reason for piston failure. It would be hugely annoying to repeat the problem
 
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ama singh

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Fully agree, that's exactly what i want to do. Are their any forum recommended specialist who could bench test the injectors?
 

Uncle Benz

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A number of my close friends have used these guys before, with excellent results. Mention Northloop.co.uk if you call them


Company ME & JW PUMFORD
Address CARHAM ROAD
HOYLAKE
WIRRAL
MERSEYSIDE
CH4 4FF
Contact MIKE & JEFF
Tel 0151 632 0002
Fax 0151 632 0003
E-Mail mpumford@aol.com
 
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ama singh

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Thank you, I’ll give them a call tomorrow
 
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ama singh

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Tried calling ME & JW Pumford a few times, no response. Phone line is dead, any other recommendations please?
 

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Having looked myself, they may have closed down. I'm sorry for them and you. I'll have an ask amongst my lot for a good reference.
 

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do they suffer from sticking valves?

maybe after one hard run it got so hot, it stuck open and had a meeting with the piston?

can you swap out a single valve or is the head bin material? and if it needs a valve it will need a guide
 
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Just waiting on key parts from main dealer so I can get engine reassembled to at least be able to check cold compression across all the cylinders, providing these results are good, I will order more parts from Benz to get the engine fully assembled and back in the car. May as well change various seals now that the engine is out of the car, it's actually a pleasure to work on out of the car. I'm also giving the engine and the engine bay a really good clean.

Once engine is back in car I will check the fuel pressure drop across all the injectors before start-up. I'm also going to wire in an oil pressure gauge.
 

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Having looked myself, they may have closed down. I'm sorry for them and you. I'll have an ask amongst my lot for a good reference.
Sadly company dissolved only last month! Real shame as good 'go to' guys nice and local to me (about 2 miles from my factory). Not sure what the guys are doing now if anything
 
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Cold compression tests completed, two low cylinder results on opposite head, both reading ~90 PSI.

Decided to strip down and found piston ring lands failed on two more pistons, looks like early stages of main piston failure. I also noted that the pistons rings on these two cylinders where aligned on the same part of the piston.

I'm wondering if the failure mode is still likely to be the program in the ECU OR if it could be due to the position of the upper and middle pistons rings being aligned.

Would welcome feed back.
 
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Update:

Replaced 3 damaged pistons, 1 bent exhaust valve and physically removed blockage in secondary CATS.

I'm amazed at how this car drives without any hesitation and the power is just awesome!!
 

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Update:

Replaced 3 damaged pistons, 1 bent exhaust valve and physically removed blockage in secondary CATS.

I'm amazed at how this car drives without any hesitation and the power is just awesome!!
Well done. Enjoy.
 

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Sorry I didn't get a chance to call you back, been manic up to closing but glad to hear all back up and running!
 
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Hi Alex,

I understand, thank you for all your support and guidance. Its good to know where the experts are for support!
 
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ama singh

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ama singh

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Pulling like a wannabe "HELLBOY", the torque is unbelievable!! Suggestions for next steps?
 

alexanderfoti

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Water meth and intercooler! (if you want to keep it working!)
 
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ama singh

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Any recommendations for live wireless IAT data logging, charting and recording?

Any recommendations on Meth kit and uprated intercooler?
 
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