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Old 04-06-2021, 11:30 PM   #1
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Hi all,

I've a 2004 Boxster S. It's been sitting in my garage (un-driven) for various reasons (I know?!) for about 1 year. I've had it on trickle charge the whole time. I tried to start it this weekend but it won't catch. When you turn on the ignition I get all the dash lights, the needle rises a bit, the fuel gauge shows 1/2 and then when I try to start it, it cranks (is that the right word) strongly as the battery is good, but it doesn't start.

I tried the following:
* Added 10L of good fuel. Gauge now shows 1/2.
* Turned on and let sit for 30s before trying to start (friend recommended this).
* Pressed throttle to floor with car off, released throttle and then tried to start.
* Turned on ignition, pressed throttle to the floor and tried to start.

Nothing worked although it does crank strongly. The engine just doesn't catch.

I'm wondering if it is fuel related (maybe old fuel????).

It's actually quite hard to get the car out of the garage as it is down a 11% slope out onto a narrow street so hard to bring it to a shop.

Anyway - looking for advice. Would be nice to get it going again as its a fantastic drive. When I last drove it, it was in perfect condition. Shame I had to leave it so long.

Thanks for reading and for any advice.

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Old 04-07-2021, 05:03 AM   #2
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Personally I have never had a problem with fuel going so bad after one (or two) years that the car won't start. If the car was running fine before the problem is probably fuel or spark. Is it possible that you have a rodent problem? There are a lot cases of rodents chewing through wire insulation leading to electrical component failure. Check fuses.
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Old 04-07-2021, 05:38 AM   #3
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Check the fuel pump is working Iíve just had exactly the same thing
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Old 04-07-2021, 11:46 AM   #4
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Quote:
Originally Posted by Blue99 View Post
Check the fuel pump is working Iíve just had exactly the same thing
Try pushing the car vigorously back to front like you are trying to push it up a speed bump. You want to introduce a wave into the fuel tank.

This problem can occur when the contacts inside the fuel pump motor get corroded. Getting the fuel to move can just slightly turn the impeller and get the fuel pump to make solid electrical contact.
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Old 04-07-2021, 06:20 PM   #5
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Quote:
Originally Posted by elgyqc View Post
Personally I have never had a problem with fuel going so bad after one (or two) years that the car won't start. If the car was running fine before the problem is probably fuel or spark. Is it possible that you have a rodent problem? There are a lot cases of rodents chewing through wire insulation leading to electrical component failure. Check fuses.
I haven't seen any rodents around the garage (or house in general). It's pretty clean with nothing really lying around to attract them except the car and some bikes. But anything is possible I guess. I'll check the fuses. It is a good idea ot check them anyway although the car cranks just fine but fails to catch.
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Old 04-07-2021, 06:24 PM   #6
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Originally Posted by ddruker View Post
Try pushing the car vigorously back to front like you are trying to push it up a speed bump. You want to introduce a wave into the fuel tank.

This problem can occur when the contacts inside the fuel pump motor get corroded. Getting the fuel to move can just slightly turn the impeller and get the fuel pump to make solid electrical contact.
Interesting suggestion. I'll see what I can do to make the fuel move around. A wave is going to be an interesting challenge Suspension is pretty hard though I guess so will see where I can get to.
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Old 04-07-2021, 09:05 PM   #7
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Originally Posted by Blue99 View Post
Check the fuel pump is working Iíve just had exactly the same thing
Btw. How does one check that the fuel pump is working? Sounds like you got your issue fixed. That is good to hear.
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Old 04-08-2021, 07:36 AM   #8
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I checked mine a bit Heath Robinson kind of way. I removed the battery and tray connected a multi meter across fuel pump connections got some jump leads connected up the battery and listened /felt when ign was turned on - mine was dead but never had a prob till parked up re - COVID

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