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Old 06-03-2017, 09:37 AM
Impolvo Impolvo is offline
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Default Angry d24t coolant pressure issue

So I dot a d24t running that had been parked for a bit
Changed fluids and regular stuff
Was getting warm on short drives around the block
Never past 3/4 on gauge

Parked it changed thermostat and fuel filter water separator
Now it's grumpy and doesn't want to start
Seems like it's leaking from all of the small return lines from the injectors
Could my return line be plugged and be flooding it out ?

Seems to be pressurizing coolant

Maybe bad head gasket?

Last edited by Impolvo; 06-03-2017 at 12:45 PM.
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Old 06-03-2017, 09:26 PM
ngoma ngoma is offline
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Quote:
Originally Posted by Impolvo View Post
Seems like it's leaking from all of the small return lines from the injectors
Could my return line be plugged and be flooding it out ?
Not plugged but if they are old probably leaky and can therefore allow air ingress when not running, which can partially drain the IP, which makes for hard starting. Not as common as partially drained IP from a leaky IP mainshaft seal, but a possibility. At a minimum you will want to replace the leaky hoses if only to preserve the variety of coolant hoses directly underneath the drip path. If those deteriorate and blow, the engine will quickly, catastrophically overheat.

Hard starting sticky.

Quote:
Originally Posted by Impolvo View Post
Seems to be pressurizing coolant

Maybe bad head gasket?
Possible. Does the radiator hose get hard soon after starting (i.e. before the engine warms up, so before the coolant should logically pressurize from heat?).
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Old 06-05-2017, 02:07 PM
Impolvo Impolvo is offline
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Quote:
Originally Posted by ngoma View Post
Not plugged but if they are old probably leaky and can therefore allow air ingress when not running, which can partially drain the IP, which makes for hard starting. Not as common as partially drained IP from a leaky IP mainshaft seal, but a possibility. At a minimum you will want to replace the leaky hoses if only to preserve the variety of coolant hoses directly underneath the drip path. If those deteriorate and blow, the engine will quickly, catastrophically overheat.

Hard starting sticky.


Possible. Does the radiator hose get hard soon after starting (i.e. before the engine warms up, so before the coolant should logically pressurize from heat?).
Ok I'll start with the fuel lines and replace

What size are the small fuel lines between injectors
Most are leaking so I'll start there
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Old 06-05-2017, 04:31 PM
ngoma ngoma is offline
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Forum member Anders uses 1/8" fuel line. Likely the easiest to procure at your FLAPS.

Original was the braided type. If that's what you have, and it's leaking only at the ends where it connects to the injector nipples, you can often get some more time out of them by cutting the (stretched-out) ends off and refitting them. That braided hose is durable and widely available at Bosch service centers, or from VW parts websites.

An interesting replacement is ether-based polyurethane clear fuel hose (found in motorcycle shops, and trucking equipment shops). Very good, without the braiding reinforcement. That's ether-based, NOT the ester-based version. Since it's clear it can help with troubleshooting.

Again, 1/8" or its metric equivalent.
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Old 06-05-2017, 06:09 PM
Impolvo Impolvo is offline
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Sweet
And yes mine is braided and the braiding is loose and tattered looks original
I'll order some clear lines up!
Thanks
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Old 06-06-2017, 07:14 AM
v8volvo v8volvo is offline
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When you say you changed some fluids, did you have the coolant out of it?

Did you get all the air out before starting it? These will not burp simply by filling the rad up, you need to remove the hose from the top of the cold start advance thermostat housing and slowly fill until coolant runs out.

Running with an air pocket will get one of these hot quickly and the HG is sensitive.
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