Porsche 944 Coolant fill & bleeding tips 

Hey that’s great. I’m helping people all over the world!

Welcome, Alex.

Yes, you have to pinch off the overflow hose or the air will escape there instead of forcing the coolant down thru the hoses.

Yes! You're right about the oil cooler seals having failed in this car.....along with the tranny's ring and pinion, the steering rack, etc....LOL! That's why the customer gave up, threw in the towel, and sold it to me. I ain't a-scared a no 944. There's still some residual oil in the cooling system, and just like the air, it will come to the top and get bled out. Maybe we'll drain the coolant and do one more heat cycle with the SHOUT laundry detergent, which doesn't foam up. Good on you, Tim S., for not incorrectly diagnosing the oil in the coolant as a head gasket failure. :)

We put the engine thru another heat cycle ( warm up, fans come on, fans shut off ) with the thermostat removed and just water and SHOUT!. Got the rest of the oil residue out of the cooling system. :)

If you think the fans aren't working, just short the fan switch wires together. They should come on, which means your relay, fuses, fans are good.

@@timcomeau420 Thanks! will give that a try.

Welcome. Glad to help.

It's that new kind brown of coolant, Mike.

I try to be helpful.

Could be several things. Make sure your tank isn’t overfilled make sure your tank cap is down all the way and tight. timing belt tension is what drives the water pump. Make sure the thermostat is opening by putting your hand on the lower radiator hose next to the radiator. Feel For heat.

@@ComeauRacingEnterprises so if heat on bottom hose then stat is functioning?

@@johndeltoro7990 If heat on RADIATOR side of lower hose, then thermostat is opening. However, if your cap is worn out or your tank neck is worn out, the cap will lift and let water flow out. Tank must not be overfilled.

@@ComeauRacingEnterprises cap brand new

@@ComeauRacingEnterprises water pump and stat brand new…which is why I’m confused

We use water and shout laundry detergent. The detergent will suspend the oil in the water then drain the system. Do this without a thermostat in place. After it’s warm for the lower radiator hose and let it drain

@@ComeauRacingEnterprises awesome will do.

I understand the idea behind them is to get rid of an air pocket. I think this was a treatment for uneven cylinder head temp around the number four cylinder. I’ve never run one in and normally aspirated car. No problems.

Make sure the heater control valve is physically opened. Water topped off, air bled out, rev the engine or even drive it a little bit to get the air to come to the top

@@ComeauRacingEnterprises Thanks, I'll do my research on the heater control valve. I'll start there. Every step is me learning something new! Thanks for the response.

@@cek347 welcome!!

Yes but change it out before you get to that point. A new plastic tank will last another 30 years

@@ComeauRacingEnterprises Thank You

@@vertex944gt3 No problem bud. Keep her on the road.

Yes, see above comment. You're right, there's a lot of crap info out there from people who aren't even 944 guys. They're regular car guys and much of their experience doesn't apply to our 944 types. I can't correct all their misinformation so I just shoot a video and give owners and enthusiasts the most accurate info I can, based on years of experience working on nothing but 944's. Often, I'll tune my effort to what's being talked about on Facebook pages like 944 No Spam, 944 owners group.

@@timcomeau420 thanks for all the great content.

@@MrStroller4u You are welcome my friend.