Repair warranty on modified vehicle

[Tech]

Hello members of TFSA

Just a question pertaining to warranty on a modified vehicle engine.

Customer brought in his vehicle with 180 000km on the clock for pistons replacement due to heavy oil consumption. We carried out the pistons replacement thereby putting an end to the oil consumption. 4000km down the line and customer came back claiming oil light intermittently flashes. We informed him that with 180 000km on the clock it is recommended he replace the oil pump as it is suspect as well as the badly worn cylinder head which he declined and put the blame squarely at or feet. (The typical since you customer).

We carried out the relevant tests to varify no wrong doing on our part but customer refused our explanation and lodged a complaint against us with the Motor Industry Ombudsman.

Whilst carrying out our tests to prove no wrong doing from our side we discovered the engine computer box has had modified performance software installed thereby enhancing performance but putting the engine outside of manufacturers specifications and under the circumstances we are refusing to provide any form of warranty.

Customer and Motor Industry Ombudsman are shouting Consumer Protection Act which ensures a customer has a warranty but how can we possibly warranty an engine which is being pushed past its limits of design by a 23 year old robot racer.

Any advice in this regard would be most welcomed.

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[AndyD]

When you replaced the pistons were the cylinder sleeves within acceptable wear tolerances? Were the cylinders honed or rebored? Is the oil light now flashing because the car is still burning oil and the level has dropped or is it due to some other failure like the oil pump itself?

[Justloadit]

I know it is late now, but where is the indemnity form signed by the customer when he did not accept your advice in the replacement of the oil pump and cylinder head.
Where is the the warranty formed which you provided to the customer stating the terms under which warranty may be claimed?

I know this is extra work, but he current situation will suffice to provide this paper work in future.

Do you have a witness to your conversation with the client when you informed him required replacement of the oil pump and cylinder head?

Are you a registered business and a member of the motor industry?

[AndyD]

I know it is late now....

So it is. Not sure why this showed up in the 'new posts'.

[Dave A]

Did you replace any of the bearings?

[Justloadit]

So it is. Not sure why this showed up in the 'new posts'.

Was referring to the question of an indemnity form having been signed. The act has now been done, and the OP was look for a solution after the fact.
It is also to inform of any one reading the post, who may become wise with what is being discussed in the thread.