Replying to Thread:

pinging sound around exhaust manifold

Created On Tuesday 12, March, 2013 2:32 PM by ricky

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ricky

Posts: 41
Joined: Jan 2010

Tuesday March 12, 2013 14:32
i have a 3406e model 2ws, 2000, i hear a pinging sound coming from around the exhaust manifold or turbo area. almost sound's like detonation in a gas engine... i think i do have another weak injector, i have replaced 2 since i bought it new in 2000, 770,000 miles.....would a weak injector make that sound... i don't know what else it could be.... ------------------------- ricky.......

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JoeZ

Posts: 938
Joined: Dec 2008

Tuesday March 12, 2013 21:45

If you have detirmined it not to be an exhaust leak, it could be an injector....or the turbo going bad. I have seen overfueling cause more of a knock than a ping...... I haven't seen this problem in the 3406E but have in others. I think it could be time to have the injectors gone through...at least with all those miles it is a good investment....If the turbo is going bad, it will start putting metal in your engine. Take off the intake side and check for loseness....

-------------------------
One of the last 2 Stroke mechanics left.
44 years in the business and worked on everything from 53 series to 149 series. Winding it down now...time to move on.

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westcoast

Posts: 982
Joined: Dec 2008

Saturday March 16, 2013 08:03
As joe said definitely check the hot wheel as one of your manifold diffuser rings could be failing ( if still fitted ) Regards David ------------------------- detroit

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ricky

Posts: 41
Joined: Jan 2010

Thursday March 21, 2013 16:42
i did reseal the exhaust manifold and new studs last year....as a preventitive maintenance.....i didn't under stand why the metal sleeve that seems to reduce the size of the port was part of it....what is the reason for it ? .... ------------------------- ricky.......

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westcoast

Posts: 982
Joined: Dec 2008

Friday March 22, 2013 02:51
flow and heat transfer Regards David ------------------------- detroit

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ricky

Posts: 41
Joined: Jan 2010

Saturday March 23, 2013 18:57
thanx for the reply......... ------------------------- ricky.......

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ricky

Posts: 41
Joined: Jan 2010

Saturday March 23, 2013 19:05

i replaced the turbo with a cat reman at 500,000 just for piece of mind, was running great at the time, and run great after up untill now. a little down on power and a rough ness at idle. i pulled the piping back today just to have a look and all was fine. i think i just need some new injectors. probably will put injector cup o-ring's in at that time...... i need to buy or borrow the removal and install tool's to do the injector cup's.

-------------------------
ricky.......

Edited: Saturday March 23, 2013 at 19:08 by ricky

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ricky

Posts: 41
Joined: Jan 2010

Wednesday March 27, 2013 13:58
i found the tool... it's 188.00 made by monaco.... never heard of them but the quality look's ok.....should i replace the whole injector cup and o-rings, or just the o-rings.....i've heard there is an updated cup..... are they worth replacing? ------------------------- ricky.......

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westcoast

Posts: 982
Joined: Dec 2008

Friday March 29, 2013 06:01
Only if the cups are burnt or leaking Regards David ------------------------- detroit

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ricky

Posts: 41
Joined: Jan 2010

Friday March 29, 2013 18:58
thanx for the reply........ ------------------------- ricky.......

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TDcrash63

Posts: 163
Joined: Sep 2007

Friday March 29, 2013 19:01
I have purchased a few things from Monaco tool, very high quality

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ricky

Posts: 41
Joined: Jan 2010

Sunday March 31, 2013 12:31
good to hear.... i just ordered what i needed...... ------------------------- ricky.......

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ricky

Posts: 41
Joined: Jan 2010

Thursday December 18, 2014 14:59
850,000 miles and that sound is still there....... ------------------------- ricky.......

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