Still not running??

General chat about the car goes in here.
rlux4
Patron 2022
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Posts: 4211
Joined: Thu Jan 10, 2008 8:32 pm
Your car is a: 1982 2000 Spider
Location: Granite Falls, Wa

Re: Still not running??

Post by rlux4 »

Yes, that's the charcoal canister.
Because air flow is critical to our L-Jetronic system anything that could cause a vacuum leak has got to be fixed. Any air going into the intake plenum, besides via the boot from the AFM is unmetered by the ECU and will affect how the car runs. Again though, it isn't causing your car not to run, it would run, just not as efficiently. Something is causing your injectors not to spray. The dual relay's 2nd side is grounds for the FI system. It has to be working properly for the car to run: one side is power to the fuel pump, the other side grounds.
Another possibility is not enough pressure in the fuel system.
The pump puts out over 40# and the regulator controls it to around 38#. Without this high pressure, fuel will either not be sprayed out the nozzles of the injectors, or will dribble out. The high pressure is needed to create vaporization when the fuel passes from high pressure to low pressure as it exits the injector. Another thing you need to check is this fuel pressure. Either have a mobile mechanic come and check it for you, or better yet, buy a liquid pressure gauge and adapt it so that it has a 5/16" barbed nipple that you can put in the hose going up to the cold start valve. That comes right off the end of the fuel rail.
Keep at it, it will get fixed. I had a similar problem when I first got my car, and with the help of this forum, Brad Artigue's FI manual and some studying, I eventually got my car running perfectly.
And Keith is right. If you have fuel flow at good pressure and the injectors are pulsing, try tapping on them to loosen em' up.
Ron
Ron Luxmore
rlux2n2@gmail.com
'82 2000 Spider: after 26 years between Spiders.
Chihua33

Re: Still not running??

Post by Chihua33 »

I will have to buy a pressure gauge, I can hear the pump running and it sounds good. When I have the key on and the pump is running I can feel gas in the line up to the fuel regulator. I haven't checked anything with the dual relay yet, but I'm thinking that I might have to check into that too.

I love working on this thing, but boy does it make your head spin sometimes! ha
I'm really thinking that it has to do with the injectors being clogged because the car did start up last year and ran by feathering the gas...but that was before I went to work and cleaned the tank and put in a new fuel filter and all of that.

Thank you guys a lot! It makes me feel a little better that I'm at least going in the right direction. If it came down to the injectors being clogged, how hard is it to pull them and clean them? I hope I don't have to buy new ones seeing as it would cost more then I paid for the car hah
So Cal Mark

Re: Still not running??

Post by So Cal Mark »

if you feel pressure in the hose to the regulator, the hoses are connected backwards. The hose that connects to the regulator is the return hose
Chihua33

Re: Still not running??

Post by Chihua33 »

Mark,

In the last picture I posted, the line that comes up to the fuel regulator from the bottom I can feel gas in that line when the fuel pump is on. Is this wrong?
majicwrench

Re: Still not running??

Post by majicwrench »

If the fuel pump is running and the injectors are getting an electical pulse the dual relay is not causing your problem. Don't chase ghosts.
Keith
Chihua33

Re: Still not running??

Post by Chihua33 »

Perfect, thank you Keith.

Now Mark has me wondering about the lines being switched? But if they were switched would it fire at all?
Chihua33

Re: Still not running??

Post by Chihua33 »

Well....it officially has me confused!

As mark said it would seem like the lines are switched. when I turn the fuel pump on the line from it gets pressure then runs to the metal line and if I trace that it goes to the line it should....BUT...I don't feel pressure in that line, and I DO feel pressure going to the "bottom" of the pressure regulator???

I'm lost :oops:
rlux4
Patron 2022
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Joined: Thu Jan 10, 2008 8:32 pm
Your car is a: 1982 2000 Spider
Location: Granite Falls, Wa

Re: Still not running??

Post by rlux4 »

Have you disconnected the line at the cold start injector? If you have flow it will come gushing out that line with the pump running. Be sure to have the hose pointed at a container and wear eye protection. It's normal for pressure to stay in the line, so when you're disconnecting the hose have it wrapped in a rag because it will squirt pretty good.
Is the black cap on your AFM still epoxied on? If it's removeable you can move the chrome arm to make the connection that will energize the pump with the key in "run" position. Easier than taking the boot off to move the flap.
Ron
Ron Luxmore
rlux2n2@gmail.com
'82 2000 Spider: after 26 years between Spiders.
majicwrench

Re: Still not running??

Post by majicwrench »

Really no need at this time to check flow at cold start valve. You must already have pressure...the engine starts and runs. Might be nice to know HOW MUCH pressure.
Without looking at the lines, I would bet it is tough to cross the pressure and return line. If you did manage to switch lines, and the check valve in the pump was working properly, you would end up with too much fuel pressure. "Feel Pressure" is not a test in the book, and really doesn't mean much IMHO.
You need to focus on the injectors and/or accurately check the fuel pressure when the engine dies.
Keith
rlux4
Patron 2022
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Posts: 4211
Joined: Thu Jan 10, 2008 8:32 pm
Your car is a: 1982 2000 Spider
Location: Granite Falls, Wa

Re: Still not running??

Post by rlux4 »

Keith, my suggestion was in lieu of having a pressure gauge. There's a lot of difference in flow between 3-4 pounds and 40 pounds of pressure, seeing the amount of flow would give a pretty good idea if there's a problem with it.
I agree that concentrating on the injectors is looking like the way to go.
Ron
Ron Luxmore
rlux2n2@gmail.com
'82 2000 Spider: after 26 years between Spiders.
majicwrench

Re: Still not running??

Post by majicwrench »

Having a gauge checking fuel pressure when engine dies would be wonderful, but watching the flow from the line would be pretty subjective. Really, really need a gauge of some sort to check fuel pressure when engine dies. It is very possible the pump is only running a few seconds.
keith
rlux4
Patron 2022
Patron 2022
Posts: 4211
Joined: Thu Jan 10, 2008 8:32 pm
Your car is a: 1982 2000 Spider
Location: Granite Falls, Wa

Re: Still not running??

Post by rlux4 »

Next time you've got the hood open (or are you keeping it open?) check the the yellow wire that's in a green sheath is connected to the "+" side of the coil. This green sheeth carries two wires, the other wire goes to the "-" coil terminal.
Ron
Ron Luxmore
rlux2n2@gmail.com
'82 2000 Spider: after 26 years between Spiders.
So Cal Mark

Re: Still not running??

Post by So Cal Mark »

I was under the impression that the car did not run. I've seen one FI car that had the lines switched, it came from another shop that rebuilt the engine and couldn't get the car to start. If the lines are reversed, no fuel gets to the injectors until the regulator opens
Chihua33

Re: Still not running??

Post by Chihua33 »

Tomorrow I'm going to go and buy a gauge to check the pressure. And I will also check the wire that you talked about Ron.
Thanks for all the help guys, I sure hope I can get it running!
Chihua33

Re: Still not running??

Post by Chihua33 »

Where can I get one of the pressure gauges from? would they have these at autozone? or a similar place?
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