Help KSB won't stop leaking fuel ! - Dodge Diesel - Diesel Truck Resource Forums

1st Gen. Ram - All Topics Discussion for all Dodge Rams prior to 1994. This includes engine, drivetrain and non-drivetrain discussions. Anything prior to 1994 should go in here.

Help KSB won't stop leaking fuel !

Thread Tools Search this Thread
Old 11-14-2017, 05:55 PM   #1  
Registered User
Thread Starter
Join Date: Apr 2015
Posts: 3
Help KSB won't stop leaking fuel !

Ive got a 1993 12v with VE Injection pump. The engine & pump were rebuilt about 4000 miles ago with lots of upgrades... Hamilton 188/220 cam, big S300 (64/72) turbo, 5 x .012" injectors, M&H timing advance spacer... which leads me to my problem.

Last week I noticed fuel dripping from my vacuum pump and traced it to the ksb housing. Fuel is leaking between the m&h timing spacer and the ksb at a rate of 1 drip every 10 seconds or so. I confirmed it was leaking from the ksb flange by watching it drip with the help of a dental mirror.

I tried removing the timing spacer but the ksb still drips at the same rate. I tried replacing the o rings even though the ones provided with the M&H timing kit seemed to still be in perfect shape. To the best of my knowledge this wasn't an issue until 2 weeks ago.. only thing I did around that time was to turn in the main fuel screw 1 turn. Turbo spooled up faster, EGTS actually went down on the highway, truck ran great! I thought all was good.

I checked the ksb housing for any obvious cracks but can't see anything. I just don't know what else could be causing this flange to leak.
The engine runs perfectly, same as it did before, just leaks fuel, What am I missing? Could the pressure regulator in the injection pump connected to the ksb be stuck open ? or clogged?

Tomorrow I plan to remove this regulator valve and the banjo bolt on the fuel return line to make sure both aren't clogged and function properly, any constructive ideas are appreciated!
quiksilver1j is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Injector lines won't stop leaking!! Thread sealant? leathermaneod 24 Valve Engine and Drivetrain 1 08-04-2015 12:44 AM
Non i/c KSB vs. I/C KSB 92smokin blacky 1st Gen. Ram - All Topics 17 07-17-2012 01:33 AM
To KSB or Not To KSB 59FORD 1st Gen. Ram - All Topics 5 02-26-2007 06:44 AM
Axle seal won't stop leaking swhite832 1st Gen. Ram - All Topics 10 02-25-2007 03:49 PM
Help, fuel injector on 12-valve won't stop leaking! DL1221 HELP! 13 12-04-2006 08:51 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -5. The time now is 12:43 AM.

© 2018 MH Sub I, LLC dba Internet Brands
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.