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Volvo Penta KAD 44 B, C Banging Sounds!!

P

Philippe Pageau-Goyette

New member
My saga continues. Now 18 months into it and 70K later. Still no engine working. Here is what is going on and I pray one of you can help.

I had two rebuilt sent in from http://www.marinepart***press.com/ They cost me 25K each and were shipped to Saint Martin. I had them installed and the port side engine never worked. Here are my issues

1) See video. https://www.youtube.com/watch?v=2guH...ature=youtu.be
There is a banging sound in the port engine. Caraibes Diesel seems to think it is the Crank Shaft but they are not sure and do not want to open the engine as they dont want to get blamed for anything and are saying I should revert back tohttp://www.marinepart***press.com/ but these guy say that the engines where perfect when they left the USA.

2) http://www.marinepart***press.com/ sent in a Volvo KAD 44 "B" and a KAD 44 "C" and that there is a different type of computer that handle those two different type of engines. So, again, I am being told that the Port engine needs a new computer as the fuel injection is all wrong and wont match the starboard side. Could that be true?

3) The last issue seemed to have occurred during the installation. There is water that is filling up the boat when the engine is running at sea. No one know where it is coming in. I realize this is probably an installation problem but would like to hear your advice.

Thoughts?

PPG
 
A Hudon said:
Your videos are not accessible!
A Hudon
Click to expand...


How about this?

https://www.youtube.com/watch?v=2guHQFz6OAQ


Found out today that

1) The port engine (the one with banging sound) is the KAD-44C and they did change the first injector to convert to B. BUT, they still have the Port engine **** off at 3300 RPM back to 1500 every time we try to go above 3300. They are really worried the computers are different between KadB and KadC and that is what is causing the issue. Not sure.

2) It looks like no one knows what the banging sound is. Its a bran new rebuilt engine. Worked fine when it left the factor.

PPG
 
I would slacken each injector union one at a time to try to identify if its related to one particular cylinder, if the noise changes or stops you know its piston/crank related. If it doesn't alter then its valve train. The valves are tricky to adjust if you haven't done it before. The water ingress is somewhere down stream of the seawater pump so check all hoses and pipes and also the exhaust muff between the turbo and down pipe. Each engine is a stand alone unit, and the ECU in one engine has no bearing on another engine. I have never heard of them having to match each other, there may be issues with gas and gear calibration but unlikely, as it sounds like its all working.
 
Draco24 said:
I would slacken each injector union one at a time to try to identify if its related to one particular cylinder, if the noise changes or stops you know its piston/crank related. If it doesn't alter then its valve train. The valves are tricky to adjust if you haven't done it before. The water ingress is somewhere down stream of the seawater pump so check all hoses and pipes and also the exhaust muff between the turbo and down pipe. Each engine is a stand alone unit, and the ECU in one engine has no bearing on another engine. I have never heard of them having to match each other, there may be issues with gas and gear calibration but unlikely, as it sounds like its all working.
Click to expand...

OK....we did the injecter slacking yesterday and injector pressure test and it came out perfect. Here is another video...

Could it be because one motor is EDC-C and EDC-B? The one banging is the C. The mechanic did tell me he swap the first injector so that (i guess) both engine because a B as far as the computer know.

PPG
 
I don't think the fact that one is EDC-C and the other is EDC-B is the cause.
I'd get the injection pump timing checked as its a very hard knock which is what you get on a diesel if the timing is too advanced and the injection occurs early resulting in the fuel burning while the piston is still travelling up to TDC.
 
Could be wrong, but that sounds like a single cylinder knock to me. Have you compression checked all cylinders and is it possible on that engine to use a wooden dowell down the injector hole to check for bearing 'slack'?
 
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