help me please car not running right.
#441756
July 30, 2015 12:06 am UTC
July 30, 2015 12:06 am UTC
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Joined: Nov 2014
Posts: 86 Mississauga, Ontario, Canada
Awais Amanat
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OP
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Joined: Nov 2014
Posts: 86
Mississauga, Ontario, Canada
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Hi all. I have 92 1g dsm awd tsi. My car doesn't start properly. I have to pinch the fuel pressure return line in order to start it. I have changed the fuel pump to an evo 8 ran a new -6an line to the new oem fuel filter, -6an line to the fuel rail and I have swapped out 3 fuel pressure regulators. All studs have been replaced with rtm stud repair kit. I still have to rewire the fuel pump with the stm kit. Bow when I unclamp the return line the car starts to stutter and wants to die. The vaccum goes close to 0. And if I give it gas it bogs and sputters. Removing the maf sensor throws a CEL but car starts to run ok but still sputters. And if I give it gas it wants to shut off for a second then runs fine. I've been told that it could be a boost leak or i may not have enough fuel pressure. Please help me. Can anyone help me do a boost leak test. I'm in mississauga. I will pay you for ur time I need this car running as I don't have another car and need to go to work. Thanks everyone in advance
1992 talon tsi awd. Under construction
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Re: help me please car not running right.
[Re: Awais Amanat]
#441764
July 30, 2015 03:00 am UTC
July 30, 2015 03:00 am UTC
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Joined: Oct 2010
Posts: 9,968 Caledon, Ontario, Canada
Bryan Lawrence
Senior Member, with Far TOO Much Time on Their Hands
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Senior Member, with Far TOO Much Time on Their Hands
Joined: Oct 2010
Posts: 9,968
Caledon, Ontario, Canada
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I would start by searching for a leak, maybe your o ring isn't good or anything between the pump and the rail could be the issue.
"Old Blue" 91 Talon TSi AWD "Super Enthusiast" 91 Talon TSi AWD Checkout DSMFAQ.com!
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Re: help me please car not running right.
[Re: Awais Amanat]
#441765
July 30, 2015 03:11 am UTC
July 30, 2015 03:11 am UTC
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Joined: Nov 2014
Posts: 86 Mississauga, Ontario, Canada
Awais Amanat
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OP
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Joined: Nov 2014
Posts: 86
Mississauga, Ontario, Canada
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The fuel pump is off an evo 8. I used a new fuel pump install kit from ziggy. Got a new 6an line from the fuel pump sending unit to the new oem fuel pump. I doubt that there's a restriction between fuel pump and fuel rail. Pump does need to be rewired with the stm kit.
1992 talon tsi awd. Under construction
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Re: help me please car not running right.
[Re: Awais Amanat]
#441769
July 30, 2015 04:51 am UTC
July 30, 2015 04:51 am UTC
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Joined: Nov 2014
Posts: 86 Mississauga, Ontario, Canada
Awais Amanat
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OP
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Posts: 86
Mississauga, Ontario, Canada
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Sorry don't really understand what u mean by that. The vaccum line is on the fpr. All vaccum lines on top of the throttle body are cut and blocked.
1992 talon tsi awd. Under construction
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Re: help me please car not running right.
[Re: Awais Amanat]
#441782
July 30, 2015 01:36 pm UTC
July 30, 2015 01:36 pm UTC
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Joined: Oct 2010
Posts: 9,968 Caledon, Ontario, Canada
Bryan Lawrence
Senior Member, with Far TOO Much Time on Their Hands
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Senior Member, with Far TOO Much Time on Their Hands
Joined: Oct 2010
Posts: 9,968
Caledon, Ontario, Canada
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Ok turn the pump on and pinch the line then turn the car off. If the pressure drops you have a leak.
Mike is asking where the FPR line is coming from. Can you take a picture of everything and post it.
"Old Blue" 91 Talon TSi AWD "Super Enthusiast" 91 Talon TSi AWD Checkout DSMFAQ.com!
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Re: help me please car not running right.
[Re: Awais Amanat]
#441816
July 31, 2015 12:13 am UTC
July 31, 2015 12:13 am UTC
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Joined: Oct 2010
Posts: 9,968 Caledon, Ontario, Canada
Bryan Lawrence
Senior Member, with Far TOO Much Time on Their Hands
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Senior Member, with Far TOO Much Time on Their Hands
Joined: Oct 2010
Posts: 9,968
Caledon, Ontario, Canada
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Picasa works well and photobucket is popular too.
"Old Blue" 91 Talon TSi AWD "Super Enthusiast" 91 Talon TSi AWD Checkout DSMFAQ.com!
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Re: help me please car not running right.
[Re: Awais Amanat]
#441885
July 31, 2015 11:56 pm UTC
July 31, 2015 11:56 pm UTC
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Joined: Nov 2014
Posts: 86 Mississauga, Ontario, Canada
Awais Amanat
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OP
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Joined: Nov 2014
Posts: 86
Mississauga, Ontario, Canada
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Clamped return line and maf on 70 psi. Clamped return line no maf 70 psi . Unclamped returnline maf on 30psi Unclamped return line maf off 38psi.
Got the fluid filled rtm racing gauge and connected it right before the fuel rail.
1992 talon tsi awd. Under construction
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Re: help me please car not running right.
[Re: Awais Amanat]
#441892
August 01, 2015 04:11 am UTC
August 01, 2015 04:11 am UTC
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Joined: Oct 2010
Posts: 9,968 Caledon, Ontario, Canada
Bryan Lawrence
Senior Member, with Far TOO Much Time on Their Hands
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Senior Member, with Far TOO Much Time on Their Hands
Joined: Oct 2010
Posts: 9,968
Caledon, Ontario, Canada
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What do you mean maf on, maf off?
"Old Blue" 91 Talon TSi AWD "Super Enthusiast" 91 Talon TSi AWD Checkout DSMFAQ.com!
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Re: help me please car not running right.
[Re: Bryan Lawrence]
#441893
August 01, 2015 05:15 am UTC
August 01, 2015 05:15 am UTC
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Joined: Nov 2014
Posts: 86 Mississauga, Ontario, Canada
Awais Amanat
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Posts: 86
Mississauga, Ontario, Canada
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What do you mean maf on, maf off? I mean maf connector plugged in or out. I disconnected the maf to see if the car would run differently and it did.
1992 talon tsi awd. Under construction
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Re: help me please car not running right.
[Re: Awais Amanat]
#441906
August 01, 2015 06:46 pm UTC
August 01, 2015 06:46 pm UTC
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Joined: Oct 2010
Posts: 9,968 Caledon, Ontario, Canada
Bryan Lawrence
Senior Member, with Far TOO Much Time on Their Hands
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Senior Member, with Far TOO Much Time on Their Hands
Joined: Oct 2010
Posts: 9,968
Caledon, Ontario, Canada
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Yeah it would cause it goes into limp mode.
See what you pressure is with the vacuum line off of the fuel pressure regular is
"Old Blue" 91 Talon TSi AWD "Super Enthusiast" 91 Talon TSi AWD Checkout DSMFAQ.com!
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Re: help me please car not running right.
[Re: Awais Amanat]
#441908
August 01, 2015 06:57 pm UTC
August 01, 2015 06:57 pm UTC
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Joined: Oct 2010
Posts: 9,968 Caledon, Ontario, Canada
Bryan Lawrence
Senior Member, with Far TOO Much Time on Their Hands
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Senior Member, with Far TOO Much Time on Their Hands
Joined: Oct 2010
Posts: 9,968
Caledon, Ontario, Canada
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Yeah while the car is running and tell me how much fuel pressure, then clamp the return and turn the car off and tell me how much fuel pressure. If it drops tell me how fast it drops. You will need two people for this, or I guess a camera would work
"Old Blue" 91 Talon TSi AWD "Super Enthusiast" 91 Talon TSi AWD Checkout DSMFAQ.com!
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Re: help me please car not running right.
[Re: Awais Amanat]
#441909
August 01, 2015 07:03 pm UTC
August 01, 2015 07:03 pm UTC
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Joined: Nov 2014
Posts: 86 Mississauga, Ontario, Canada
Awais Amanat
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Posts: 86
Mississauga, Ontario, Canada
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Ok will post results in a couple of hours. What will this determine tho. I'm thinking that my injectors are bad. Because the fuel that came out of the fuel filter was brown and sludgy full of rust.
1992 talon tsi awd. Under construction
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Re: help me please car not running right.
[Re: Awais Amanat]
#441910
August 01, 2015 07:18 pm UTC
August 01, 2015 07:18 pm UTC
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Joined: Oct 2010
Posts: 9,968 Caledon, Ontario, Canada
Bryan Lawrence
Senior Member, with Far TOO Much Time on Their Hands
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Senior Member, with Far TOO Much Time on Their Hands
Joined: Oct 2010
Posts: 9,968
Caledon, Ontario, Canada
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Did you clean your tank when you opened it up? you have the sock on the fuel pump? They may be dirty. This will determine if your fuel system is at the right pressure, then the pressure drop will tell us if you have a leak before the regulator.
"Old Blue" 91 Talon TSi AWD "Super Enthusiast" 91 Talon TSi AWD Checkout DSMFAQ.com!
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Re: help me please car not running right.
[Re: Awais Amanat]
#441913
August 01, 2015 08:32 pm UTC
August 01, 2015 08:32 pm UTC
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Joined: May 2010
Posts: 1,950 Guelph, Ontario
Jeremy Gilbert
Serious Member
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Serious Member
Joined: May 2010
Posts: 1,950
Guelph, Ontario
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Ok will post results in a couple of hours. What will this determine tho. I'm thinking that my injectors are bad. Because the fuel that came out of the fuel filter was brown and sludgy full of rust. If the fuel that came out of your filter was rusty, that would suggest your problem is before the filter. Its job is to stop that crap from getting to your injectors. However, some may still have gotten there. Bryan's suggestions would be good next steps: car running with vacuum line off the regulator shows you your base fuel pressure. What fuel pressure regulator are you running? If you're on a stock regulator and the pressure comes up as being too low, you've got a flow issue in your feed, likely caused by crap getting sucked up in the tank. Let us know what you find!
1995 TSi AWD 11.7@119 1.8 60' - Curse of the Bad Driver PHP: 0
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Re: help me please car not running right.
[Re: Awais Amanat]
#441914
August 01, 2015 08:38 pm UTC
August 01, 2015 08:38 pm UTC
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Joined: Nov 2014
Posts: 86 Mississauga, Ontario, Canada
Awais Amanat
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OP
Regular Member
Joined: Nov 2014
Posts: 86
Mississauga, Ontario, Canada
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I have changed the fuel pump with an evo 8 pump. New install kit with new sock. 6an line to the filter. Fresh gas. New oem fuel filter. The crud and nasty fuel came out of the old fuel filter. I'm running a stock fuel pressure regulator. I have 3 of them and have tried all of them on.
1992 talon tsi awd. Under construction
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Re: help me please car not running right.
[Re: Awais Amanat]
#441915
August 01, 2015 08:54 pm UTC
August 01, 2015 08:54 pm UTC
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Joined: May 2010
Posts: 1,950 Guelph, Ontario
Jeremy Gilbert
Serious Member
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Serious Member
Joined: May 2010
Posts: 1,950
Guelph, Ontario
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I have changed the fuel pump with an evo 8 pump. New install kit with new sock. 6an line to the filter. Fresh gas. New oem fuel filter. The crud and nasty fuel came out of the old fuel filter. I'm running a stock fuel pressure regulator. I have 3 of them and have tried all of them on. Yes but if the problem was in your fuel tank, changing all that wouldn't eliminate the problem. How did the old sock look? Anyway, still think checking base fuel pressure is your next step. If it's low, the fact you've tried 3 means the problem is not likely the regulator.
1995 TSi AWD 11.7@119 1.8 60' - Curse of the Bad Driver PHP: 0
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