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[dash16]

car has been sitting for about 6months in the garage. Was running fine before it sat. Now it doesn't start.

I suspect its the fuel that has turned stale. I was told down at the speed shop that I need to drop the gas tank and have it flushed and replace all the fuel lines.

My friends advise me that I just need to siphon the gas and replace the fuel filter.

What do you guys think I should do?
_________________
1987 Porsche 924S Black/Black. 5-spd.
Options: AFX C79 261 398 423 650 651 657

1987 Mercedes 190E 2.3-16 Cosworth Pearl Black/Black. 5-spd.

STUTTGART PREVAILS

[gohim]

I don't think the gas is the problem. Not after only 6-months here in CA.

Have you checked for spark and fuel?

Have you tried installing your spare DME relay?

[dash16]

I would say the gas was a couple months older than 6months but the car sat for 6.

What is my spare DME relay?

I am guessing when you say check for fuel, you don't mean try the ignition and see if my fuel gauge has a reading.
_________________
1987 Porsche 924S Black/Black. 5-spd.
Options: AFX C79 261 398 423 650 651 657

1987 Mercedes 190E 2.3-16 Cosworth Pearl Black/Black. 5-spd.

STUTTGART PREVAILS

[masterdave]

it may be the gas, i have a 31' model A that i have left gas in from fall till summer, the simplest thing to do is go to your local auto store and buy fuel activator, the nature of gas causes it to settle over time much as old oil does, the activator will thin the gas a bit and help get it moving,

fuel lines are expensive i had looked in to replacing mine recently as they are getting old and crackled, they run about 150$ a pice and the whole system require 4 or 5 of them.

also check for spark, pull one of the plugs out, reconnect the wire and with a pair of pliers hold it, while some one turns the engine over, touch the plug to a good ground source (the engine its self is fine) and watch for a spark.

[dash16]

I can't find anything at the stores that I can put into my tank after the gas has been sitting; only treatment before planned storage.

What s this fuel activator that you've had success with?
_________________
1987 Porsche 924S Black/Black. 5-spd.
Options: AFX C79 261 398 423 650 651 657

1987 Mercedes 190E 2.3-16 Cosworth Pearl Black/Black. 5-spd.

STUTTGART PREVAILS

[masterdave]

i used sta-bil i released now that i look at the bottle that it is actually a stabilizer however that may do the trick. I just had some big fuel issues my self and had to replace some lines. first off you can drain the tank your self, just get the car up on some blocks of jack stands, a lift if you can, and look under the rear passenger side locate the fuel pump. Its about soda can sized and right behind the wheel. the line coming of the tank is held on by a simple hose clamp just take that off and drain the tank in to a gas can or where ever. then run some either or some thing thiner than gas, an either of sorts, this will break up the old fuel, through to get some of the old gas out. Then just put the line back on. In terms of fuel lines there are basically 4 you have to watch out for. the 2 rubber ones in the engine compartment usually degrade as a result of heat off the engine but are expensive as they are also part of the metal tubes that run the length of the car. I had problems with my rear lines that degrade as a result of salt, time and heat. there are only 2 and they are short the first runs off the filter (a new filter will also be a good thing if you have never changed it) (remember to de-pressurize your fuel system or fuel will spray out all over you) it runs over the dif to a metal line. its tricky to get out as a result of where it is but not impossible. The next runs from the pump to the fuel filter. this one is key at the head of this line is a valve that connects the pump to the line. It keeps pressure in check but due to its small parts it can get stuck and break. while you are at it i would advise replacing the valve, line head nut, and dont forget O-rings. ever where you find one put one back or the system will leak when you go to re-pressurize. I like to put a bit of fuel line teflon tape on the joints, its a personal thing but for old joints i find that it can be a good thing if the threads are a bit rusted and leaking.

and your DME relay is under the steering wheel on the top of the 3 rows of fuses and relays. you will need to remove the upper panel to get to it unless you have tiny hands but removing the upper panel makes is much easier how ever be careful that the open connection on the panel dont touch any thing or they will spark. The relay is on the left,its black and if its original it will say DME relay on the head of it. you can also test fuel pressure by removing that i can explain it if you need me to its simple but you may find you never even have to.

[Paul]

Another lazy way....

Unscrew the cap on the front of the fuel rail and attach a hose.

Put the hose in an empty gas can.

Unhook the + wire at the fuel pump.

Run a + and - jumper to the fuel pump terminals.
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

[dash16]

I put this stuff called HEET into my tank which is a gas line antifreeze and moisture remover.

Did the trick.
_________________
1987 Porsche 924S Black/Black. 5-spd.
Options: AFX C79 261 398 423 650 651 657

1987 Mercedes 190E 2.3-16 Cosworth Pearl Black/Black. 5-spd.

STUTTGART PREVAILS

[masterdave]

nice, sounds like it was just some bad gas, i would drive it heavily and run a few tanks of gas though it to get it all nice and fresh again, some injector cleaner would also probably be a good idea. remember if you are going to store it again to put fuel stabilizer in it.

[dash16]

thanks for the concern masterdave. do you have a suggestion of injector cleaner to use?

I don't plan on storing the car again. I was off at college but the car needed a FOES so there was no sense in driving it. Now that the FOES is done, its breaking the speed limit time after I get those leaky radiator hoses replaced.

As for bad gas, it crossed my mind that I was able to start a Mercedes 450SEL that had been sitting in a parking lot for 2 years with no fuel stabilizers. I have friends that has told me similar stories with cars that have been sitting for 4 years.
_________________
1987 Porsche 924S Black/Black. 5-spd.
Options: AFX C79 261 398 423 650 651 657

1987 Mercedes 190E 2.3-16 Cosworth Pearl Black/Black. 5-spd.

STUTTGART PREVAILS

[masterdave]

i dont remember what i used, but i just went to my local auto store and they only had like 2 options. i cant explain those other situations the only thing that is logical is that perhaps those cars have a larger coil and much more spark, thus the car can ignite gas that is not so clean. Or there could be a small leak in your tank that is allowing moisture in to the tank. Im leaving for college in a few weeks my self ill keep the stabilizer in mind.