Unsiezing glowplug - Mondeo TDCI
Discussion
How I would do it:
Use an old paint brush to clear debris from around glow plugs BEFORE starting the job.
Get the engine hot, then apply PLUS GAS to each glow plug and allow to soak(about 15 mins each time), do this a few times. Then with the engine fully hot, attempt to remove the glow plugs. Start by tightening each one slightly before undoing. Work each one back and forwards with the T bar until it is loose enough to unscrew. Liberal applications of plus gas will help to lubricate the threads as it will penetrate.
WD40 WILL NOT WORK!!
Wear gloves and take your time.
I accept no responsibilty for the outcome if you manage to bugger it up.
This is just an advisory method.
Use an old paint brush to clear debris from around glow plugs BEFORE starting the job.
Get the engine hot, then apply PLUS GAS to each glow plug and allow to soak(about 15 mins each time), do this a few times. Then with the engine fully hot, attempt to remove the glow plugs. Start by tightening each one slightly before undoing. Work each one back and forwards with the T bar until it is loose enough to unscrew. Liberal applications of plus gas will help to lubricate the threads as it will penetrate.
WD40 WILL NOT WORK!!
Wear gloves and take your time.
I accept no responsibilty for the outcome if you manage to bugger it up.
This is just an advisory method.
I am not sure about this so I stand to be corrected, but personally I wouldn't use any anti-seize products on the glow plugs, for two main reasons
-The glow plug 'probably' has an anti seize coating on the threads already, like the zinc on a spark plug.
-Lubricating a threaded fixing will increase the fixing's tension for a given torque. It is the friction in the thread which causes your torque wrench to click off at it's pre-set torque- lubricating the fixing increases the torque at which this happens. In my opinion don't lubricate unless the maintenance manual specifically instructs it.
-The glow plug 'probably' has an anti seize coating on the threads already, like the zinc on a spark plug.
-Lubricating a threaded fixing will increase the fixing's tension for a given torque. It is the friction in the thread which causes your torque wrench to click off at it's pre-set torque- lubricating the fixing increases the torque at which this happens. In my opinion don't lubricate unless the maintenance manual specifically instructs it.
If you know the brand of glowplug you should be able to find out what the breakage torque is.
Then use a torque wrench to undo them along with the advice used above regarding hot engine and plusgas. Keep the torque below the breakage torque and keep trying to undo them, if the torque wrench clicks, more heat and more plusgas, then try again.
Works everytime for me. The only problem is you'll need a torque wrench that does 0-50nm.
Then use a torque wrench to undo them along with the advice used above regarding hot engine and plusgas. Keep the torque below the breakage torque and keep trying to undo them, if the torque wrench clicks, more heat and more plusgas, then try again.
Works everytime for me. The only problem is you'll need a torque wrench that does 0-50nm.
If glow plugs are your problem then start by only changing the ones that will readily come out. If you only manage to change 3 you wont be breaking down. One faulty glow plug is highly unlikely to stop your car starting.
Does your car need easy start all the time? Only when its cold? Could you have an injector problem?
Does your car need easy start all the time? Only when its cold? Could you have an injector problem?
HustleRussell said:
May be wrong but I thought it was a fairly rare occurrence in cars which had been used and serviced properly, especially modern ones with aluminium heads? I'm no mechanic though.
What would you say in response to the original copperslip vs no copperslip question?
Personally I'd use it, as I do on spark plug threads.What would you say in response to the original copperslip vs no copperslip question?
Hi Martyn,
Engine runs sweet after an Easy Start start so I don't think I have an injector or pump problem.
This shed has been neglected by it's previous owner who only replaced or repaired when it broke!
This of course costs double in the long run and I'm the sucker that's now determined to get this motor running as it should.
I should be attacking the glow plugs tomorrow.
Thanks for all the feedback.
Phil
Engine runs sweet after an Easy Start start so I don't think I have an injector or pump problem.
This shed has been neglected by it's previous owner who only replaced or repaired when it broke!
This of course costs double in the long run and I'm the sucker that's now determined to get this motor running as it should.
I should be attacking the glow plugs tomorrow.
Thanks for all the feedback.
Phil
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