The Portal Hub: All things Pinzgauer, Haflinger, Volvo 303 and more.

The Portal Hub: All things Pinzgauer, Haflinger, Volvo 303 and more.

From Vince Sweeney: You have arrived at the original "Real 4x4's" Forums, founded in 1999.

The forum isn't free for me to keep up. Donations accepted securely with Paypal.

      
View unanswered posts | View active topics It is currently Thu Dec 14, 2017 10:57 am



Reply to topic  [ 23 posts ]  Go to page 1, 2  Next
 Why did my Pinz have fuel delivery issues 
Author Message
User avatar

Joined: Wed Feb 01, 2012 11:39 am
Posts: 2513
Location: Ontario, Canada
Post Why did my Pinz have fuel delivery issues
Hmmm I wonder (and yes that is metal)
Pre filter was packed :)
Attachment:
06063D48-501B-472E-8AD0-8EBE1F17CD4E.jpeg
06063D48-501B-472E-8AD0-8EBE1F17CD4E.jpeg [ 932.78 KiB | Viewed 299 times ]

_________________
72 Pathfinder
75 710M 2.7i
94 350GDT
96 350GDT Worker


Sat Nov 04, 2017 7:29 pm
Profile
User avatar

Joined: Mon Aug 10, 2009 11:13 pm
Posts: 1267
Location: Coeur d'Alene, ID
Post Re: Why did my Pinz have fuel delivery issues
Looks like it's time for a locking gas cap. :shock:

_________________
Ed
75 710K (sold)
06 2WD Ural Patrol (sold)
69 2WD Rokon Trailbreaker 4 sale
A few Honda Trail 90's (all sold)

Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.


Sat Nov 04, 2017 8:09 pm
Profile

Joined: Sun Dec 21, 2008 10:50 am
Posts: 96
Location: Atlanta
Post Re: Why did my Pinz have fuel delivery issues
Beautiful. Nothing like having a problem and finding such an obvious, cheap and easy solution.
clap clap clap

_________________
Jerome
CRJ Driver


Sat Nov 04, 2017 9:48 pm
Profile YIM
User avatar

Joined: Sun Sep 25, 2011 11:19 am
Posts: 590
Location: Woodside, CA
Post Re: Why did my Pinz have fuel delivery issues
Question is where did the metal bits come from?
Looks like materiel from a fine tooth cutting blade,
might want to see if it is magnetic. or SS material.
IMHO I'd pull your tank plug and and flush the heck
out of your tank :wink:

_________________
Puller: 710K 2.7L EFI
Follower: Sankey MK 3, 3/4 Tonne
Driver: Ron // KO0Q


Sun Nov 05, 2017 11:46 pm
Profile
User avatar

Joined: Wed Feb 01, 2012 11:39 am
Posts: 2513
Location: Ontario, Canada
Post Re: Why did my Pinz have fuel delivery issues
Since it is getting cold... plan is to drop the tank and get it cleaned and relined in the Spring so it is good for another 40+ years :)

_________________
72 Pathfinder
75 710M 2.7i
94 350GDT
96 350GDT Worker


Mon Nov 06, 2017 7:41 am
Profile
User avatar

Joined: Mon Oct 12, 2009 9:31 pm
Posts: 625
Location: Washington
Post Re: Why did my Pinz have fuel delivery issues
After the EFI conversion, my 712 ran like a top... until one fill up at the wrong gas station.
I had a similar amount of metal debris problems in the filters. I won't forget poor Andre in a cold
Western Washington barn rebuilding a fuel system in January!


Mon Nov 06, 2017 5:40 pm
Profile
User avatar

Joined: Wed Feb 01, 2012 11:39 am
Posts: 2513
Location: Ontario, Canada
Post Re: Why did my Pinz have fuel delivery issues
totaljoint wrote:
After the EFI conversion, my 712 ran like a top... until one fill up at the wrong gas station.
I had a similar amount of metal debris problems in the filters. I won't forget poor Andre in a cold
Western Washington barn rebuilding a fuel system in January!


Sounds familiar and my new injectors just arrived today
Waiting for 1 more filter to arrive and then hopefully this weekend, in 32 degree weather, I will be recreating your experience

_________________
72 Pathfinder
75 710M 2.7i
94 350GDT
96 350GDT Worker


Mon Nov 06, 2017 6:23 pm
Profile
User avatar

Joined: Mon Oct 12, 2009 9:31 pm
Posts: 625
Location: Washington
Post Re: Why did my Pinz have fuel delivery issues
As I recall, flushing out the gas tank and all it's baffles took the most time, yielded the most particulates and we then put some neodynium magnets int he tank
to catch anything we couldn't see or flush-- and for future bad gas contamination possibilities.
A cheaper Harbor Freight flexible fiber optic scope helped a great deal in inspecting the tank,
but in the end the plastic camera end of it didn't survive the prolonged immersion in gas.
I recommend the magnets. Lets see if Andre concurs....
If you and I had metal shavings in gas, wonder how many other have had it?
My bad gas came from a "no ethanol" gas pump.


Mon Nov 06, 2017 9:25 pm
Profile
User avatar

Joined: Wed Feb 01, 2012 11:39 am
Posts: 2513
Location: Ontario, Canada
Post Re: Why did my Pinz have fuel delivery issues
Warm day (45) so took the day off and swapped all filters and even put new injectors in (Jim’s EFI on it)
Pinz still has fuel delivery issues so perhaps the fuel pump?
Thoughts - it won’t really catch, just turns over
Edit: it also backfired so lean
Thx

_________________
72 Pathfinder
75 710M 2.7i
94 350GDT
96 350GDT Worker


Wed Nov 08, 2017 5:10 pm
Profile
User avatar

Joined: Wed Apr 14, 2004 9:58 pm
Posts: 1401
Location: Idyllwild, CA
Post Re: Why did my Pinz have fuel delivery issues
The only problem I ever had with the EFI conversion was the external fuel pump; either getting vapor lock (at 107F desert temperature) at anything below 3/4 tank, or (after fixing that issue by draining off the bottom of the tank from the drain fitting, and putting the pump at that level) getting air entrapment due to the suction vortex when pulling from the bottom of the tank (only at low tank levels).

The pump needs to be capable of producing 50 psi or more at the flow rate that is needed (probably 99% of the fuel gets returned to the tank). If the pump is not up to this, or the filters are clogged, then the EFI system certainly won't work as intended or expected. You should have a high flow rate filter in the suction side of the pump, and a high pressure filter in the outlet side of the pump. The suction side filter keeps the bigger particles out of the pump (to prevent wear) and the outlet side ensures that tiny particles won't clog or foul the injectors. Both are very important to the EFI system.

When Andre made my extra large capacity fuel tank, we installed an in-tank Walbro pump with an attached fuel sock (this is now the suction side filter). The sock is fairly large (2 x 5") so no suction vortex is created outside of it; the pump is always immersed in fuel (except a very low levels) so vapor lock has gone away. We even routed the return hose into a different baffle section of the tank as to not create foam or bubbles that the pump would immediately pickup (they have a chance to dissipate by the time the fuel gets into the adjacent baffle section where the pump is located). All these features have completely eliminated the problems that I had before with the external pump, and the engine runs much smoother and more consistently from a full tank to virtually empty.

You'll should check to see if any of the problems (and solutions) that I have found are part of your problem. Best of luck.

_________________
Jim M.
712W and 710M


Wed Nov 08, 2017 8:02 pm
Profile
User avatar

Joined: Wed Feb 01, 2012 11:39 am
Posts: 2513
Location: Ontario, Canada
Post Re: Why did my Pinz have fuel delivery issues
It has been fine all spring and summer driving every few days, 30mins to 1.5 hours+
Only issues have been since the wonderful metal in the fuel filter. Tank looks clean now (did a camera inspection but obviously I can see past various baffles). Fuel filter between tank and pump is a high flow and clear (so I can inspect it, so far no more metal bits). After the pump I have a new filter (same as what I was using all summer) and then added the new injectors (had spares so thought it would not hurt).
I have a spare fuel pump but was lazy yesterday and since it was kicking in and seemed to be working I did not replace it
Hopefully I can replace it this weekend - warm yesterday and snow expected today :(
Will report back - thx

_________________
72 Pathfinder
75 710M 2.7i
94 350GDT
96 350GDT Worker


Last edited by TechMOGogy on Thu Nov 09, 2017 9:59 am, edited 1 time in total.



Thu Nov 09, 2017 8:53 am
Profile
User avatar

Joined: Sun Sep 25, 2011 11:19 am
Posts: 590
Location: Woodside, CA
Post Re: Why did my Pinz have fuel delivery issues
Well now I understand what people meant when they said bargain gas
is from the bottom of the barrel :wink:

_________________
Puller: 710K 2.7L EFI
Follower: Sankey MK 3, 3/4 Tonne
Driver: Ron // KO0Q


Thu Nov 09, 2017 9:30 am
Profile
User avatar

Joined: Wed Feb 01, 2012 11:39 am
Posts: 2513
Location: Ontario, Canada
Post Re: Why did my Pinz have fuel delivery issues
Replaced all fuel filters, fuel pump, lines and injectors - still not happy
Talked to Jim and he said to check the crank sensor.
Cranking showed zero rpm so no spark signal to coils.
Cleaned and replaced it and it started right up but issue returned once warm
I am going to replace the crank sensor and double check the wiring.
That should hopefully solve the issue and get me back on the road before the snow flies
Today working outside at below 40 degrees kinda sucked :)

_________________
72 Pathfinder
75 710M 2.7i
94 350GDT
96 350GDT Worker


Sun Nov 19, 2017 5:02 pm
Profile

Joined: Thu Apr 02, 2015 1:11 pm
Posts: 58
Location: Indiana, U.S.A.
Post Re: Why did my Pinz have fuel delivery issues
Forgive my newby ignorance but what is the crank sensor? Are you referring to the 4500 module?

_________________
75 710K
New owner


Sun Nov 19, 2017 6:24 pm
Profile
User avatar

Joined: Wed Feb 01, 2012 11:39 am
Posts: 2513
Location: Ontario, Canada
Post Re: Why did my Pinz have fuel delivery issues
whitesik wrote:
Forgive my newby ignorance but what is the crank sensor? Are you referring to the 4500 module?


I have Jim LaGuardia’s EFI so it a part of the EFI vs a stock Pinz setup

_________________
72 Pathfinder
75 710M 2.7i
94 350GDT
96 350GDT Worker


Sun Nov 19, 2017 8:16 pm
Profile
Display posts from previous:  Sort by  
Reply to topic   [ 23 posts ]  Go to page 1, 2  Next

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 © 2000, 2002, 2005, 2007 phpBB Group.