Still need halp

[dbrannon79]

one other thing. are you seeing any smoke out the tail pipe? if so, what color and what does it smell like?

 

[JayTheCPA]

4# under no load on a 2000 DS4? If correct and read from just upstream of the IP, this is indicating either a failing LP or clog / restriction in the system.

 

[Mark towery]

Pictures or a video please.

seeing a single bubble is normal after shutting down the engine, but multiple, there is an issue.

There is multiple.

one other thing. are you seeing any smoke out the tail pipe? if so, what color and what does it smell like?

Maybe a little black

 

[Mark towery]

4# under no load on a 2000 DS4? If correct and read from just upstream of the IP, this is indicating either a failing LP or clog / restriction in the system.

I have either replaced lines or blew through them. This thing is driving me nuts!!!

 

[jrsavoie]

I have either replaced lines or blew through them. This thing is driving me nuts!!!

Have you verified your fuel cap is good?

I'm guessing a weak lift pump. But if your fuel tank isn't breathing, it'll restrict the amount of fuel you can suck out of it.

 

[Mark towery]

I’ve run it with it and with out it

 

[jrsavoie]

I’ve run it with it and with out it

If you're not sucking air, I would guess you have a bad lift pump

 

[Mark towery]

None of this is sounding like a ip to yall?

 

[jrsavoie]

None of this is sounding like a ip to yall?

Hard to guess at the IP when you know it's not getting enough fuel.

 

[Mark towery]

Ok.

 

[dbrannon79]

if the IP were failing it would rev to the moon. your seeing black smoke when hitting a load, what about when it starts doing it's dance at 2500 RPM under load. I am curious if you are loosing boost pressure from the turbo

 

[Mark towery]

Ok.

What are the factory connections at the lp? I know there 3/8 but what are they called?

 

[Mark towery]

if the IP were failing it would rev to the moon. your seeing black smoke when hitting a load, what about when it starts doing it's dance at 2500 RPM under load. I am curious if you are loosing boost pressure from the turbo

No sir it stays about 10

 

[dbrannon79]

Accelerates good but when I get to about 2500 rpms and start to back off it hiccups and jerks until I get back in it.
I have replaced lp, throttle sensor, pmd, ops, cleaned grounds, put clear hose on and no air bubbles. Also replaced hoses that run from pump to filter. 8# with lp and5# when running. Any advice welcome

do you have a boost gauge installed? this is possibly an indication of the boost solenoid or crack in the vacuum lines not allowing the turbo to spool up when a good load is applied. how much black smoke are you seeing in this condition?

 

[Mark towery]

No sir it stays about 10

But I am backing out of it when it starts doing it

 

[dbrannon79]

Remind me again what trouble codes the PCM is showing?

 

[Mark towery]

do you have a boost gauge installed? this is possibly an indication of the boost solenoid or crack in the vacuum lines not allowing the turbo to spool up when a good load is applied. how much black smoke are you seeing in this condition?

Yes sir I do. New vacuum pump and new hoses. I’m not seeing a lot of black smoke

Remind me again what trouble codes the PCM is showing?

no codes.

 

[Mark towery]

Yes sir I do. New vacuum pump and new hoses. I’m not seeing a lot of black smoke

no codes.

I wish it would.

 

[dbrannon79]

Ok, then I would look closely at the fuel pressure. also look for bubbles in the clear return line when this issue occurs. you might have to mount a camera to record it while driving other than someone helping as a second pair of eyes.

 

[Mark towery]

Ok, then I would look closely at the fuel pressure. also look for bubbles in the clear return line when this issue occurs. you might have to mount a camera to record it while driving other than someone helping as a second pair of eyes.

Ok I may change lp this weekend. What are the factory conditions at the lp?