John Deere 30 series head gasket

7740 man

Member
Just went to start my 6330 this morning & it ran for a couple of minutes, then I stopped it, went to restart & it wasn’t turning over(stuck at tdc) then it started, clouds of white smoke coming out of the exhaust & smelling of coolant. Levels are all normal still & oil is still black. Head gasket?
 

7740 man

Member
Standard, I think it’s the head gasket for sure. Mechanic said it’s done well to make it to 7500 hrs on original gasket for a 30 series
 

Chae1

Member
Location
Aberdeenshire
Standard, I think it’s the head gasket for sure. Mechanic said it’s done well to make it to 7500 hrs on original gasket for a 30 series
Ours blew like a a steam train when it went. It was on a dual carriageway. Was still under warranty. Dealer recovered it that time.

My 6420s did the same every morning and was a nightmare to start on cold morning. It eventually cleared. It had head gasket done too.
 

Gerbert

Member
Location
Dutch biblebelt
Ours blew like a a steam train when it went. It was on a dual carriageway. Was still under warranty. Dealer recovered it that time.

My 6420s did the same every morning and was a nightmare to start on cold morning. It eventually cleared. It had head gasket done too.
Non-common rail? My common rail 6420 is the best cold starting tractor I have had.
 

Chae1

Member
Location
Aberdeenshire
Non-common rail? My common rail 6420 is the best cold starting tractor I have had.
Not sure to be honest. Was a 05.

They did head gasket and made no difference! Turned out it was a seal somewhere in fuel system letting fuel back.

Still wanted paid for head gasket repair funnily enough. Despite them diagnosing that as problem.
 

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