Spark plug dif­fi­cult ac­cess

Car Mechanics (UK) - - Tales From The Workshop -

This 2008 Volk­swa­gen Touran had been to one garage, which had re­fused to change the spark plugs, be­fore be­ing brought to us. We dis­cov­ered why when at­tempt­ing to re­move plug num­ber three – it was ex­tremely tight and we were con­cerned that the plug had been cross-threaded. With this in mind, we agreed to carry out the work, but told the owner that if the plug had been cross-threaded, the job would not be quick or cheap be­cause the in­let man­i­fold would need to be re­moved to give ac­cess for a re­place­ment thread in­sert.

As things worked out, us­ing a bar on the stub­born spark plug was suf­fi­cient to re­move it, and the cus­tomer was happy to hear that there had been no dam­age to the thread. The spark plugs on this en­gine aren’t easy to ac­cess and it’s im­por­tant to al­ways wind them in fully by hand to pre­vent the pos­si­bil­ity of cross-thread­ing.

Ac­cess to the spark plugs through the in­let man­i­fold is tight and care must be taken to en­sure they are cor­rectly threaded.

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