DieselTalk

DieselEngineTrader's FREE Diesel Engine Forums

new topic search Categories login View Caterpillar Engines

CATEGORY LISTINGS > CATERPILLAR > 3406b loss of power @ high rpm [ REFRESH ]
Thread Title:

3406b loss of power @ high rpm


Created On Friday July 23, 2010 08:59 Diesel Talk
Diesel Talk Forum

BOB55
Diesel Talk Forum
Posts: 5
Joined: Jul 2010

Note Friday July 23, 2010 08:59 View thread in raw text format
Diesel Talk
3406b in 1985 Ford 190000 miles, seems to run fine at low rpm till you get up 16-1800 rpm (it's getting worse) then it cuts out totally (loss of power but stays running) with a large cloud of black smoke. It will run again at low rpm if you let off the fuel and coast a Minute of so. Fuel pressure stays around 35-40 psi. Air fuel ratio diaphragm replaced. Any ideas? Please!

-------------------------
bobjudkins
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

JoeZ
Diesel Talk Forum
Posts: 938
Joined: Dec 2008

Note Friday July 23, 2010 17:38 View thread in raw text format
Diesel Talk
Assuming you have a clean air cleaner element, and no intake air restrictions..........next thing to check would be the turbo......

-------------------------
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.
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

desertstormboy
Diesel Talk Forum
Posts: 372
Joined: May 2008

Note Friday July 23, 2010 19:15 View users profile View thread in raw text format
Diesel Talk
double check the diaphram again, it may have torn while installing it. what about the timing advance? are the flyweights damaged or worn, maybe the orings in the advance are worn. have you noticed any stumbling or anything of that nature?


-------------------------
IT WENT BING BANG BOOM!
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

BOB55
Diesel Talk Forum
Posts: 5
Joined: Jul 2010

Note Friday July 23, 2010 19:58 View thread in raw text format
Diesel Talk
Thanks for your response. I'm going to feel real dumb (but happy) if its as easy as a air filter. I thought it should have been fine but I just checked it and it worse the I thought. First thing in the morning I'll pick one up.

-------------------------
bobjudkins
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

BOB55
Diesel Talk Forum
Posts: 5
Joined: Jul 2010

Note Friday July 23, 2010 20:15 View thread in raw text format
Diesel Talk
Thanks Desertstormboy The first diagram looked Ok but we replaced it anyway. So I would hope that's not it. I'll be a "happy idiot" if the air filter work's. I was told to check it awhile back but thought it was fine. I thought that would be too simple. If it is I'll swallow my pride and let you know.

-------------------------
bobjudkins
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

desertstormboy
Diesel Talk Forum
Posts: 372
Joined: May 2008

Note Saturday July 24, 2010 13:40 View users profile View thread in raw text format
Diesel Talk
no pride is high enough to not swallow....if it is the air filter, i would be a happy customer to find out it is a cheap fix and happy driver to have motor running fine again.

-------------------------
IT WENT BING BANG BOOM!
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

BOB55
Diesel Talk Forum
Posts: 5
Joined: Jul 2010

Note Thursday August 05, 2010 18:52 View thread in raw text format
Diesel Talk
Sorry it took so long to get back to thank you. Boy what a difference fresh air makes. It was the air filter, I thank it has been wet. Thanks for your responses. I've read where you've been a great help to a lot of folks. thanks again.

-------------------------
bobjudkins
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

BOB55
Diesel Talk Forum
Posts: 5
Joined: Jul 2010

Note Thursday August 05, 2010 19:03 View thread in raw text format
Diesel Talk
I wanted to let you know it was the air filter. And to thank you for your service on this site. And a special thanks to you and to all who serve our great country. I honor you.

-------------------------
bobjudkins
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
CATEGORY LISTINGS > CATERPILLAR [ REFRESH ]
JJ Rebuilders
JJ Rebuilders
IESC CORP.
IPD Parts
Luoyang Diron Parts Trading Co.,Ltd
JJ Rebuilders
Young & Sons Inc.
Heavy Quip, Inc.
Advertize on Diesel Engine Trader

Customer Testimonials

Newsletter

Subscribe to our mailing list to get all the latest DET news.

'It took at least 4 weeks before we got our first enquiries for the 28 engines we listed - 3 months on we are making 3 to 4 sales per month! We're really pleased and I like the the feature that shows how many views our engines get.'

Pete Melhuish, Northwest Diesel Parts, Portland, Oregon, USA

'Just for the record, I did get more traffic from your web site than any other way I tried to sell the motor and will certainly use your site again. Have also told others how many calls and e-mails I recieved - thanks again!'

Vince Tulio, Chalfont, Pennsylvania. USA

'We've sold a number of engines via DieselEngineTrader.com - even some that we've had lying around for a few years! It's very useful in getting our inventory seen by a much larger market.'

Jackie Read, A J Diesels Ltd, Southampton, UK