NissanDiesel forums

Nissan diesel engines, and the people who love them
It is currently Thu Dec 14, 2017 11:43 am

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 3 posts ] 
Author Message
Post Number:#1  PostPosted: Mon Nov 03, 2014 1:47 am 
Offline

Joined: Mon Nov 03, 2014 1:34 am
Posts: 3
I just bought a ud 1200. It seems to lack power. It struggles to hold 55mph up hills on the highway empty. It is a manual with a 5 speed. Is it normal for these motors to be so lacking in horsepower? What should I start with looking at? The air filter is clean. The rubber tube leading to the turbo, from the air cleaner, seems a bit squishy. The only line that seems questionable is a little rubber line from the front of the turbo that leads to a diaphragm valve of some sort. Its old and dry rotted. Is there way to safely turn the power up on these things? I pulled the exhaust off from the exhaust brake thinking i could give it a little more ease at breathing. That seemed to help.

details:
XNDXHO4.6FAB
FD46TA-U2
4.617l
6 cylinder diesel
Nissan UD 1200 with a flatbed


Top
 Profile  
Reply with quote  
Post Number:#2  PostPosted: Tue Nov 11, 2014 7:07 am 
Offline

Joined: Fri Aug 31, 2007 6:49 am
Posts: 806
Location: Cochrane Alberta Canada
You say the line from the air cleaner to the turbo is a bit "squishy". Is there a chance this is flattening out under load and restricting the air from entering the turbo ?

_________________
Retired Pauly
Problem with being retired is that you never get a day off.
1987 D21-J SD25 KC
KJLGD21FN


Top
 Profile  
Reply with quote  
Post Number:#3  PostPosted: Sun Dec 21, 2014 4:03 am 
Offline

Joined: Mon Nov 03, 2014 1:34 am
Posts: 3
Took it to a shop and the boost was low. They cleaned and adjusted the turbo. Runs as good as it will get. Better fuel mileage and a noticeable difference in power. They informed me there is not a lot you can do with this engine.


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 8 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group