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My money is on poor cambelt job. You can see marks on the pistons where the valves have made contact.
Was it particularly Tappy after the change after 1500rpm? Like an old fiesta?
You're correct.
It's goes, over the crank, under the water pump, over the pas pump, around the tensioner, over the alternator, around the air con compressor, over the lower idler back to the crank.
Hi James,
I'll be your nearest specialist.
If it's an air con model, with dephaser will be £610. This includes oil and filter, and is using all genuine parts.
All work is invoiced and carries a 12 month parts and labour warranty.
Narrow band isn't accurate enough at full throttle, it's very accurate between 14.3 and 15.2, and a wideband is fairly accurate between 10 and 18:1. And the fuel trims are relying on the narrow band.
Why have you done that? Just lowered the compression for no added performance...
Also cat cam springs are needless on a standard engine with such mild cams.
I've seen no end of failures on aftermarket valves.
Also Renault Will supply new valves. They have to. EU Law states you must be...