The system still has the k-seal solution in it. The solution has been running in the system all week, it will remain in the parked CRD until I find time to work on it.

I plan on replacing the TB soon so it will no longer be used until the K-seal is out of the system at that time.

I did perform a leak down test on the heater core alone.

I separated the heater hoses leading from the heater core to the viscous heater and the metal "Y". Then I devised a setup using a 5/8" brass T connector, a pressure gauge and a tire valve threaded to the connector. I pumped 16 lbs of air into it using a bicycle pump and it did not hold pressure. I rechecked all the fittings and they were tight.

I tested the cooling system, separate from the heater core and there is a noticeable pressure drop within 15 minutes. Coolant dye test will be in the works soon.

I tested the pressure gauge on my other car and the gauge tested good. The cap is good, tested on another car too.

More tests to come.

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2006 Liberty Limited CRD, Deep Beryl Green, Yeti tune, Arp studs, new cams, rockers, lifters, TB. "Green Monster"
2005 Liberty Sport CRD, Deep Beryl Green, GDE Hot Tune, ARP studs. "Rocket"
1982 Fiat 124 Spider Convertible. "Fiona"

OK, I poured green dye in the expansion bottle, started the engine and let it run for an hour and pumped some pressure.

I then found green fluorescent solution on the ground just below the starter. I followed the trail to a micro leak at one of the EGR cooler hose. So I replaced the OEM spring clamps with screw clamps and the leak stopped.

I will perform a new leak down test tonight and just let the pressure pump rest in place under pressure all night, I'll check it in the morning.

I am hoping that this is the end of the leaks.

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2006 Liberty Limited CRD, Deep Beryl Green, Yeti tune, Arp studs, new cams, rockers, lifters, TB. "Green Monster"
2005 Liberty Sport CRD, Deep Beryl Green, GDE Hot Tune, ARP studs. "Rocket"
1982 Fiat 124 Spider Convertible. "Fiona"

I checked the pressure gauge and the pressure dropped from 15lbs to 3 lbs within 10 hours..... no visible coolant leaks, no coolant puddles and the overflow tank is dry. K-seal and dye remain in the system. The heater core is still separated from the cooling system and capped.

Now that the external leaks are no longer there, I decided to start the engine and perform the one minute HG leak test and there was mild pressure under the cap....

I think I have a HG leak that may have caused the heater core to blow and the EGR coolant hose to leak. Weak spots for pressure to escape.

I will be chancing a trip to the local diesel garage later today so that the mechanic can put it on a lift and check for external leaks and also check for a HG leak.

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2006 Liberty Limited CRD, Deep Beryl Green, Yeti tune, Arp studs, new cams, rockers, lifters, TB. "Green Monster"
2005 Liberty Sport CRD, Deep Beryl Green, GDE Hot Tune, ARP studs. "Rocket"
1982 Fiat 124 Spider Convertible. "Fiona"