03 and slight amount if oil in header tank.
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Champion
Joined: Nov 2005
Posts: 2,875
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From: North Eastern England
03 and slight amount if oil in header tank.
Been having issues with my 03 Hemi recently.
Truck been methodicly serviced evey 5k and new plugs every 40k.
I know that s a long interval for plugs but, they are NKK iriddiums and I also run LPG as a fuel.
Truck has 160k on her and never a problem engine wise till now.
Ive noticed of late that a small amount of coolant needs to be added every 2-3 weeks or so.
I then developed a missfire and pulled the plugs after getting a P0304 error.
Sure enough on cylinder #4 both plugs had the central ceramic insulator cracked off and missing on both plugs.
Truck pulls very strong and it only missfired when first started.
I thought I spotted a white plume of smoke from the exhaust on cold mornings, but that quickly stopped.
I replaced the plugs and thought no more of it as the truck never overheated and pulled like a bull without any loss of performance or poor milleage etc.
Fast forward approx 1k and 4 months and she started to missfire again.
Pulled the plugs as I generated anotherP0304 code.
Sure enough..... Both plugs cylinder #4 ceramic centers cracked in half with on half missing. Presumably gone up the exhaust valve like the first.
Today I changed out the plugs again along with the spak plug wires, injector and coil pack on #4 cylinder.
All new OEM parts.
Trucks not missing or generating codes now but..... I peered into the coolant resevoir and spotted a small ammount of oil floating on the top.
Theres no milkshake in the oil or on the dip stick.
The trucks not smoking or showing hot on the temp gauge.
I guess its either a goosed head gasket.... Cracked head or cracked inlet manifold.
I have a leak down tester so can test further.
Questions.
What do people think?
Any experience on here of what it might be?
What tests should i do to help pin point to what it is?
Will a goosed intake actually cause oil in coolant on a Hemi?
Any and all help is appreciated brothers.
Al.
Truck been methodicly serviced evey 5k and new plugs every 40k.
I know that s a long interval for plugs but, they are NKK iriddiums and I also run LPG as a fuel.
Truck has 160k on her and never a problem engine wise till now.
Ive noticed of late that a small amount of coolant needs to be added every 2-3 weeks or so.
I then developed a missfire and pulled the plugs after getting a P0304 error.
Sure enough on cylinder #4 both plugs had the central ceramic insulator cracked off and missing on both plugs.
Truck pulls very strong and it only missfired when first started.
I thought I spotted a white plume of smoke from the exhaust on cold mornings, but that quickly stopped.
I replaced the plugs and thought no more of it as the truck never overheated and pulled like a bull without any loss of performance or poor milleage etc.
Fast forward approx 1k and 4 months and she started to missfire again.
Pulled the plugs as I generated anotherP0304 code.
Sure enough..... Both plugs cylinder #4 ceramic centers cracked in half with on half missing. Presumably gone up the exhaust valve like the first.
Today I changed out the plugs again along with the spak plug wires, injector and coil pack on #4 cylinder.
All new OEM parts.
Trucks not missing or generating codes now but..... I peered into the coolant resevoir and spotted a small ammount of oil floating on the top.
Theres no milkshake in the oil or on the dip stick.
The trucks not smoking or showing hot on the temp gauge.
I guess its either a goosed head gasket.... Cracked head or cracked inlet manifold.
I have a leak down tester so can test further.
Questions.
What do people think?
Any experience on here of what it might be?
What tests should i do to help pin point to what it is?
Will a goosed intake actually cause oil in coolant on a Hemi?
Any and all help is appreciated brothers.
Al.
