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Pt cruiser coolant pressure test findings. #4492381
08/18/17 10:48 PM
08/18/17 10:48 PM
Joined: Mar 2013
Posts: 3,298
southern mo
ram_man Offline OP
ram_man  Offline OP
Joined: Mar 2013
Posts: 3,298
southern mo
I did a pressure test on the ex wife's car and it's slowly using coolant. It's a non turbo 2.4l when the upper plenum was off in the first intake chamber I could hear a hissing noise when I did the pressure test. Never saw coolant just heard the hissing. Would that be a head gasket leak for sure? I'm not all that familiar with this engine all things considered.


2014 dodge dart GT
1995 Dodge ram 1500


Re: Pt cruiser coolant pressure test findings. [Re: ram_man] #4492486
08/19/17 01:49 AM
08/19/17 01:49 AM
Joined: May 2012
Posts: 5,364
Fort Lauderdale, FL
DoubleWasp Online content
DoubleWasp  Online Content
Joined: May 2012
Posts: 5,364
Fort Lauderdale, FL
Pull spark plug on same chamber and listen for hissing there. Do a compression test as well.


07 Lincoln Navigator M1 0w-40/FU
68 Charger R/T / Supercharged 440 VR1/DBL7349
07 Ram 3500 4x4 / Cummins 6.7 /DBL7349
17 Maserati GranTurismo Cabrio
Re: Pt cruiser coolant pressure test findings. [Re: ram_man] #4492529
08/19/17 06:25 AM
08/19/17 06:25 AM
Joined: Apr 2013
Posts: 170
Kevil,Ky
vwmaniaman Offline
vwmaniaman  Offline
Joined: Apr 2013
Posts: 170
Kevil,Ky
Sounds like head gasket or crack in the head. Probably from being run out of water.


Don't waste your time on a slipshod repair.
Re: Pt cruiser coolant pressure test findings. [Re: ram_man] #4492581
08/19/17 08:02 AM
08/19/17 08:02 AM
Joined: Jan 2011
Posts: 2,943
PV Az
AZjeff Offline
AZjeff  Offline
Joined: Jan 2011
Posts: 2,943
PV Az
You've found an expensive repair on X-wife's car. Now what?


86 Samurai 1.3 leftovers
14 RAV4 2.5 5W-20 PP
16 Silverado 1500 4.3, DI, AFM 5W-30 PP

The most important thing to do in your life is to not interfere with someone else's life. - Frank Zappa

Re: Pt cruiser coolant pressure test findings. [Re: ram_man] #4492609
08/19/17 08:29 AM
08/19/17 08:29 AM
Joined: May 2013
Posts: 2,093
Saskatchewan, Canada
Johnny2Bad Offline
Johnny2Bad  Offline
Joined: May 2013
Posts: 2,093
Saskatchewan, Canada
Well known issue on PTCruisers (ask me how I know) are coolant /cooling problems. Cracked heads, warped heads or blown head gaskets are common, as are radiator fan failures. Do the compression tests, as suggested, and take it from there.

Doesn't matter that you never saw coolant, once the engine gets up to temperature and cooling system pressure it will find it's way wherever it can go. Ideally it can only go where it's supposed to, but regardless, if there is a path it's not supposed to go, it will go there too.

Buy a bottle of coolant dye ($10) and a blacklight bulb ($3) for your trouble light, and you will see every coolant leak, slow or fast.


'57 FL Straight 50 wt
'90 Miata 1.8L w/Rotrex Supercharger [Mobil1 0W-40]
'96 Ram 1500 [3.7L Mobil1 0W-20 / 1L 15W-50]
'01 PT Cruiser [Mobil1 0W-40]
Re: Pt cruiser coolant pressure test findings. [Re: ram_man] #4492902
08/19/17 03:09 PM
08/19/17 03:09 PM
Joined: Mar 2013
Posts: 3,298
southern mo
ram_man Offline OP
ram_man  Offline OP
Joined: Mar 2013
Posts: 3,298
southern mo
What if the compression is all good?


2014 dodge dart GT
1995 Dodge ram 1500



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