What to check before starting a Porsche Turbo that hasn't ran for 6 years?
#16
Three Wheelin'
DO NOT START THAT CAR WITH 6 YEAR OLD FUEL IN IT.
Fuel starts going stale within 4 weeks unless it has been stabilized when it was filled. The fuel tank needs to be drained and refilled. Then pull every spark plug and fill the tops of the cylinders with marine storage fogging oil that foams and expands as that will provide at least a little lubrication for the first time the cylinders move in the bores.
Change the oil - its now very acidic. Change the coolant. Change the brake fluid. Disconnect and fully recharge the battery, or if it wasn't on a tender, just replace it - it's toast anyway if not on a maintainer.
Put the old plugs back in to start it as the oil is going to foul them when the pistons force it up to plugs, but it will run for a bit that way, then change to new plugs.
New tires will be needed. Hopefully the brake pads haven't rusted and bonded to the rotors, as you may then need new rotors. If it has PCCBs then this won't happen.
Good luck.
Fuel starts going stale within 4 weeks unless it has been stabilized when it was filled. The fuel tank needs to be drained and refilled. Then pull every spark plug and fill the tops of the cylinders with marine storage fogging oil that foams and expands as that will provide at least a little lubrication for the first time the cylinders move in the bores.
Change the oil - its now very acidic. Change the coolant. Change the brake fluid. Disconnect and fully recharge the battery, or if it wasn't on a tender, just replace it - it's toast anyway if not on a maintainer.
Put the old plugs back in to start it as the oil is going to foul them when the pistons force it up to plugs, but it will run for a bit that way, then change to new plugs.
New tires will be needed. Hopefully the brake pads haven't rusted and bonded to the rotors, as you may then need new rotors. If it has PCCBs then this won't happen.
Good luck.
These cars are expensive so it's easy to what-if the doomsday scenario. If spending the money makes one sleep easier at night then go for it but our experience shows it isn't required.
#17
RL Community Team
Rennlist Member
Rennlist Member
Respect the opinions on this board but as someone who recently went through this it truly is overkill. The key is that the car was stored in a climate controlled garage, not a pole barn out back. Aside from the battery being toast, nothing listed above happened for us. The tires were fine as were the brakes. Exercise good judgment and don't head straight to the track but otherwise safely test drive the car and things like the tires and brakes should bounce back quickly. We changed oil and brake fluid but only after starting car and putting a few miles on it. There's a good argument to not change the oil before starting it (provided the level is full and reasonably clean) as the pressure will come up more quickly. Change it soon afterwards once it's been established things are in good order. Pulling the spark plugs twice? It may bring peace of mind but it's a difficult (or expensive) task on these cars and the need is dubious. Draining fuel is not always simple, can be dangerous, and you won't get all of it out. The car we started ran great on four year old fuel and started instantly. We simply diluted the remaining fuel by soon filling the tank and burned it off. No problems whatsoever.
These cars are expensive so it's easy to what-if the doomsday scenario. If spending the money makes one sleep easier at night then go for it but our experience shows it isn't required.
These cars are expensive so it's easy to what-if the doomsday scenario. If spending the money makes one sleep easier at night then go for it but our experience shows it isn't required.
I've had unstabilized Top Tier fuel go bad in my 997 twice over the past 5 years over a 2.5-3 month period where the car would die when you tried to accelerate since the fuel wouldn't combust properly. The only problem was the fuel as running out that tank and refilling with new made the problem go away completely. If you've ever tried to clean up a carburetor that had stale fuel run though it, you'll never gamble on running old fuel through an expensive car's fuel system ever again. I understand these cars are fuel injected and not carbureted but there are still plenty of components that can be messed up by pumping varnished fuel through them, and 6 years is way too long to think that fuel isn't compromised - components like the fuel pump, filters, injectors, especially the injectors. When I did my Cayenne widebody build the car was off the road for 18 months at the body shop. First thing I had done when getting it back was to tow it straight from the body shop to the dealership, have them push it into the service bay, and drain all the fuel before it was ever restarted. That was 18 months and this one is 6 years.
OP, you can take as few or as many precautions as you'd like. What I provided is what I'd do if it was my $75k 997 Turbo that had been stored for 6 years. You and others may be more willing to roll the dice but the headaches and associated costs aren't worth it to me when I could do what was on my list in a weekend.
#18
Racer
Were it me, and I wanted to keep it and own it, I'd pull the plugs, mist the cylinders with oil, run it up with the starter until there was oil pressure. Change all the fluids, fresh gas, fresh oil, etc, then start it.
The main thing you want to make sure of is that the turbo bearing is well filled with oil before starting it. As soon as exhaust hits it, it spins, fast.
If I was going to flip it, I'd do as little as possible, get it fired up, drive it a few blocks and list it.
Wish I had some money, I'd make an offer on it.
The main thing you want to make sure of is that the turbo bearing is well filled with oil before starting it. As soon as exhaust hits it, it spins, fast.
If I was going to flip it, I'd do as little as possible, get it fired up, drive it a few blocks and list it.
Wish I had some money, I'd make an offer on it.
#19
Respect the opinions on this board but as someone who recently went through this it truly is overkill. The key is that the car was stored in a climate controlled garage, not a pole barn out back. Aside from the battery being toast, nothing listed above happened for us. The tires were fine as were the brakes. Exercise good judgment and don't head straight to the track but otherwise safely test drive the car and things like the tires and brakes should bounce back quickly. We changed oil and brake fluid but only after starting car and putting a few miles on it. There's a good argument to not change the oil before starting it (provided the level is full and reasonably clean) as the pressure will come up more quickly. Change it soon afterwards once it's been established things are in good order. Pulling the spark plugs twice? It may bring peace of mind but it's a difficult (or expensive) task on these cars and the need is dubious. Draining fuel is not always simple, can be dangerous, and you won't get all of it out. The car we started ran great on four year old fuel and started instantly. We simply diluted the remaining fuel by soon filling the tank and burned it off. No problems whatsoever.
These cars are expensive so it's easy to what-if the doomsday scenario. If spending the money makes one sleep easier at night then go for it but our experience shows it isn't required.
These cars are expensive so it's easy to what-if the doomsday scenario. If spending the money makes one sleep easier at night then go for it but our experience shows it isn't required.
#20
Burning Brakes
Petza's advice is solid too. No way I'd drive a turbo or any car with out of date tires. but of course the crappy gas will prevent you from even going around the block. You should take as much caution as possible or risk trashing an engine that costs more to fix than the car is worth. Your friend was silly not to sell the car sooner. I used to hold on to old RAM chips thinking they would have more value in the future (why not I paid so much for them) Car probably lost 40% of its value becoming this 'story'.