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5.0 Blown Head Gasket? 

 

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 Post subject: 5.0 Blown Head Gasket?
Posted: Tue Mar 29, 2011 7:16 pm 
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Ride: '14 Grand Cherokee

Location: Port Lincoln
SA, Australia

Hi guys, long time no speak.

My wagon has a problem.

It decided to get REALLY hot on the weekend coming back from a highway trip, got home and turned the heaters on flat out to cool it down for a minute but to no avail.

there was a HUGE amount of pressure in the cooling system and a foam ontop of the coolant in the header tank.

Have i blown a head gasket? :(

 

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 Post subject: Re: 5.0 Blown Head Gasket?
Posted: Tue Mar 29, 2011 7:42 pm 
Getting Side Ways
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Age: 39

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Ride: EL XR8, '08 Mondeo XR5t

Power: 205 rwkw

Location: Perth
WA, Australia

Check your oil. Is it milky? Pull your plugs, is one washed clean? How does it sound when it's running? Is it blowing heaps of smoke when it's running?

 

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 Post subject: Re: 5.0 Blown Head Gasket?
Posted: Wed Mar 30, 2011 6:58 pm 
Getting Side Ways
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Location: Port Lincoln
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the oils fine, it idles fine when its running. it had a cooling system flush today and its still running hot, even hotter now. it got up to the O on normal :S

 

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 Post subject: Re: 5.0 Blown Head Gasket?
Posted: Wed Mar 30, 2011 11:40 pm 
Getting Side Ways
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Age: 39

Posts: 1886

Joined: 26th Nov 2006

Gallery: 7 images

Ride: EL XR8, '08 Mondeo XR5t

Power: 205 rwkw

Location: Perth
WA, Australia

Doesn't sound like a blown head gasket then. If it's still within NORMAL on the gauge, then it's not overheating... unless it's constantly going up and you shut it down when it got to the O. Maybe see if it gets close to the red before shutting it down. Are your fans switching on?

 

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Trickflow Street Heat top end kit, 70mm BBK TB & EGR, 24lb injectors, Underdrives & 3.73s: 275rwhp - 13.15@105mph NA / 12.37@116mph N20

When injustice becomes law, resistance becomes duty

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 Post subject: Re: 5.0 Blown Head Gasket?
Posted: Fri Apr 01, 2011 2:22 am 
Getting Side Ways
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Ride: EF-XR8chaser

Location: wollongong
NSW, Australia

STICKY THERMOSTAT? have the coolant tested for hydrocarbons--dye check at a radiator place,only bad thing is it cant tell which head.a compression test might.other wise do both heads and change the bolts,as they are a strech bolts.

 

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 Post subject: Re: 5.0 Blown Head Gasket?
Posted: Fri Apr 01, 2011 1:18 pm 
Getting Side Ways
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Ride: '14 Grand Cherokee

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wasnt a headgasket.... turns out the supposed new radiator was completely FUBAR.

 

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 Post subject: Re: 5.0 Blown Head Gasket?
Posted: Fri Apr 01, 2011 2:54 pm 
Getting Side Ways
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Age: 66

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Ride: EF-XR8chaser

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NSW, Australia

lucky,still sucks-fubar radiator?

 

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 Post subject: Re: 5.0 Blown Head Gasket?
Posted: Sun Apr 03, 2011 10:17 pm 
Getting Side Ways
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Location: Port Lincoln
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FUBAR - F@cked Up Beyond All Repair.

it was completely blocked at both ends from the bottom to almost 2/3 the way up :S

 

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 Post subject: Re: 5.0 Blown Head Gasket?
Posted: Mon Apr 04, 2011 1:13 am 
Getting Side Ways
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Age: 66

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Ride: EF-XR8chaser

Location: wollongong
NSW, Australia

so it wasnt a replacement you picked up,just the original one clogged up.2-3 core cross flow will take the easiest flow path and block it up.after a quick engine rebuild,i re used my radiator again,flushed it both ways and flow looked good---wrong.it got hotter than before x2 in running in and didnt come back to normal.i got lucky when i was in sydney and blew the brake booster,i recalled a member wrecking a boat and a few calls to get the info,i got the booster and a near new radiator and extras.we fitted the booster to get me home and i swapped the rest out.drove to melboure the next day---all good,thanks matt.

 

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