robzombie4551
robzombie4551
The valve that is mounted on the T-stat, is that a fuel bleed and if so should I be getting any flow with engine running or with k/o e/off. and if so what pressure should I look for.
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I have a fuel pressure ?
- Thread starter robzombie4551
- Start date
Veg_Out
Walking J Designs
Fuel should run out while running. If it doesn't, and dies or stumbles, you've got a delivery problem.
Maybe 7-10 pounds at idle.
Maybe 7-10 pounds at idle.
robzombie4551
robzombie4551
It runs fine and nothing is coming out. Could it be clogged,I power the lift pump and hear it but nothing is coming out.
robzombie4551
robzombie4551
Also egts climb up to 12-1300 but the truck runs great. 10lbs. 3/4 throttle.
ak diesel driver
6.5 driver
possible clog check at fuel bleed on top of filter. egts are to high maybe plugged cat?
robzombie4551
robzombie4551
I hollowed the cat. The motor is getting fuel and runs fine. What bothers me is that if the pump isn't pumping enough to blow fuel out the valve on the t-stat,than I'm essentially running lean because fuel isn't up to proper pressure at the i/p. or it's clogged between the housing and the hose. I need to get a reading somewhere to verify the pressure or lack thereof.
ak diesel driver
6.5 driver
running a diesel lean won't cause high egts just the opposite
robzombie4551
robzombie4551
Then i'm even more confused. Sometimes egt won't go over 1000 others up to1300, and thats w/o towing. albeit thats at full throtlle.
Matt Bachand
Depends on the 6.5
Check for air restrictions or turbo not working on the high EGTS... clogged exhausts.....
Boost keeps EGT's down up to a point....
WOT you may be pushing the turbo pasts its point of offering efficient work, thus cranking up the IAT's, resulting in HIgher EGT's, on top of heavy engine load.
Boost keeps EGT's down up to a point....
WOT you may be pushing the turbo pasts its point of offering efficient work, thus cranking up the IAT's, resulting in HIgher EGT's, on top of heavy engine load.
Matt Bachand
Depends on the 6.5
Ambient temps will have a lot to do with your EGT's also, as it causes the IAT's to go up, which directly effect EGT's. So alot of things have to come into play to say 'sometimes 1300, sometimes 1000'...
I've heard oil additive adds some EGT gain as oil has more BTU's than diesel... etc, so fuel quality can come into play as well as something a little less obvious like a stuck e-brake or shoe.
I've heard oil additive adds some EGT gain as oil has more BTU's than diesel... etc, so fuel quality can come into play as well as something a little less obvious like a stuck e-brake or shoe.
Matt Bachand
Depends on the 6.5
Your downpipe is known to be an internally collapsed POS. Repalce the downpipe if nothing else. That might be your answer.
robzombie4551
robzombie4551
D/P andC/O came in today and I will install on thurs. Why is there no fuel coming out the valve on the t-stat, which I also just put in 10 min. ago. I will lick this if it kills me or breaks me. I'm determined and stubborn and will make this thing run like 10 good men.
Matt Bachand
Depends on the 6.5
Does fuel come out of the bleeder screw at the top of the Fuel filter? When vehicle running?
If you have such LOW fuel pressure that your IP is taking it all, there would be none left to go out the water drain. So truck wouldn't stall, but not happy either. Need to do pressure test, preferably PRE-IP which is after the fuel filter, but easiest at that water drain (t-valve), but that measures the dirty side of the filter, so actual IP pressure will be lower, possibly by alot, but if it was a clogged filter, that water drain should be spewing.
Probably weak/failing lift pump or clog somewhere, possibly tank sock, or leak between LP and tank. Do pressure check.
If you have such LOW fuel pressure that your IP is taking it all, there would be none left to go out the water drain. So truck wouldn't stall, but not happy either. Need to do pressure test, preferably PRE-IP which is after the fuel filter, but easiest at that water drain (t-valve), but that measures the dirty side of the filter, so actual IP pressure will be lower, possibly by alot, but if it was a clogged filter, that water drain should be spewing.
Probably weak/failing lift pump or clog somewhere, possibly tank sock, or leak between LP and tank. Do pressure check.
robzombie4551
robzombie4551
I do put 1/2 a qt. of 30wt. in the tank at every fill-up. But I just flushed the rad and I only have water in it right now. I wanted to drive it a 2 days and drain again to get residual out before I refill with 50/50. Maybe a little air in the system now, but it doesn't go above 200f.
robzombie4551
robzombie4551
yes
robzombie4551
robzombie4551
I powered the L/p through the d/L and hear it running and get fuel at the filter bleed but it's not shooting out or anything like that. kind of like an overflowing tub just rolling over the sides.
ak diesel driver
6.5 driver
should be more flow
robzombie4551
robzombie4551
Can I use a holley f/p that i already have or do I need a walbro for fuel compatibility. The f/f is new and I don't want keep throwing 200 a week at this truck but I need it next month and breaking down or worse, blowin up, will cost more.
ak diesel driver
6.5 driver
the factory pumps are flow on fail so even if it dies a good ip will get you home. Need to check on that Holley.
robzombie4551
robzombie4551
ok thanks