Water Pump or coolant tank

Just completed water pump. I seem to have a slow leak from the tank. I replaced the T fitting, all the hoses look great. It appears to be coming from the back side of the tank. Now the question is, do I tackle myself or leave to the pros? My concern is the two plastic lines (from the video I watched, appears gas line?) that need to be disconnected before lowering the motor (not any rubber hoses off the tank, just had those off). Are they prone to breaking when messed with? How about the level sensor on the side of the tank, is that hard to remove? Is the job worse or better than the water pump?

You mean the reservoir/expansion tank?......that looks like an easier job than the water pump....here is a video: You Tube

It is worse than the water pump job, but just a little. It does involve lowering the engine a couple inches to get more clearance. The gas lines are not that bad. If you can do the water pump, you can do the coolant tank. The hard plastic hoses are prone to breaking so be careful, or just replace them.

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This is not out of the reach for the average DIY'r. Jake Raby did a video on his Rennvision YouTube channel. It's step-by-step. My tank cracked last year and the problem didn't heal itself. You should also make sure you purchase a genuine Porsche coolant expansion tank. Don't go aftermarket on this part. Good luck!

Now if they break, does the motor have to come out to fix? That's my big fear with this car, if something else breaks, I won't be able to fix the new issue. I watched the LN video a few times and it really doesn't appear that bad but it seems like it could go south real quick if one of those lines break. If it is more likely than not that I am going to break a line, it seems to me that the smart choice is to have a guy that has done it before (numerous times) do it and pay the $500 in labor versus me breaking something I can't fix in my garage and need to tow to get fixed. I guess the question is, is it more likely than not for one of those lines to break under the hands of a semi garage hack that I am. Thanks for the replies. Sometimes I just need to talked off the bridge.

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No, the engine must be lowered. If you're not comfortable with flushing the coolant system and disconnecting/reconnecting fuel and coolant lines, then, by all means, pay the professional $500 to handle it for you. The tanks aren't cheap either. The mk1 is crazy expensive compared to the mk2 tank.

Argeo,, what is your location?

Why do you have to disconnect the fuel lines?

Now the video above is interesting. 1st, the guy never lowers the motor. That guy seems to disconnect the two rubber hoses connected to the tank and the sensor and then slide out while working around the plastic lines (what are those?). Later on in the video he is attaching the gas lines. Did I miss when he disconnected? Are those hard to get off and is there some strange reburping issue when reconnected? I didn't know I could just remove the funnel of the air filter box. That's good to know. Observation, my impression is the tank only lowers to a spec below the minimum line. Could that be related to the overflow line. From the video, it seems like that line is right around where that enters the tank though I could be wrong. Seems it should be above the max line. The tank is white and appears to be relatively new. All the hoses came right off with no issues which makes me think it was messed with not too long ago. Side note: Unfortunately, I got the car from a guy that passed away and his daughter had no idea where his records are. Dad in Buffalo, NY , her in MA. Husband was pissed, thought he hit the jackpot with a red 02 996 4S , wife said no way.

Fuel line is easy and no burping required. Pully FP fuse and run the gas out of the line before disconnecting. Rag to catch any spillage.

I'm in Scituate MA. My car is an 02 so is it Mk1 tank or 2? I apologize for my ignorance on the part names. I haven't got a Bentley book yet so I am going off videos. My hearing isn't all that good either so I might miss when people say the names of things or they just say remove the lines without specifically pointing at things.

99-01 is .1...Have you not looked at the Pelican Technical section? https://www.pelicanparts.com/techart...eplacement.htm

The first thing I would check before changing the tank is the part number on the coolant tank cap. If it doesn't end in "04" I would change the cap with the latest version and see if it still leaks. Even if you have to replace the tank, you'll want the latest version of the cap. The earlier ones were known to leak. Also, you're lucky because the MK-II tanks cost a fraction of what the MK-I tanks cost. If you need to replace the tank, get a genuine Porsche one. There will be cheaper options but this is not where you want to save a few bucks.

Got it on the tank (Porsche only). Guessing not the cap because it is leaking with the car parked and cold. Wouldn't I be able to see coolant around the cap too?

I am a shadetree that just enjoys wrenching, and I was able to do this myself - 3 times actually Mainly followed Pelican to lower engine. Not difficult. I did not disconnect the fuel lines, just kinda gently pushed everything away after disconnecting the filter from the tank (99 C4). Only go Porsche for this part.

Sorry for the double post, I folded a small piece of paper towel several times and just inserted it around the botton of the cap and the tank. That little plastic lip on the tank holds it place. Drive around, check the paper. If it is wet it is likely the cap. One of my several issues was the aftermarket tank threads just wouldnt seal tight and this is how I narrowed it down. When I replaced again with the porsche tank, no issues.

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Need a new wife.

My bad. I watched at lunch. The video guy definitely says he removed gas lines because he didn�t lower motor. I�ll definitely just lower. The leak seems high in the tank. I take down to min line and the leak stops.