maisbitt wrote:RW1: Costco are cheap on redex at the moment if you know a member - 4 x 500ml bottles for about £11. Do you rate that stuff? Not sure whether the smoke given off is the crap it's shifted or whether it smokes itself?
Don't use Redex as an injector cleaner, doesn't really work. As it used to be marketed for in the 50's & 60's "upper cylinder lubricant", I'll use it mixed in the tank in my older two injection engine I have for exactly that to good effect on long runs on hot days (No smoke). It never cleans the injectors like Mech-Tec Injector Cleaner made by Merrontree Group Ltd of Watford which is what I generally use for servicing. They don't have a website iirc. Hard to find in motor factors. Generally pick mine up locally in one garage or at VW shows with certain traders. I can't use it on the 1.4TSi due to warranty.
The reason for getting the garage to do it was warranty & the misfire sensitivity of the 1.4TSi 160PS engine. Had it done only as a precaution. The real issue with the 1.4TSi is over-wide spark plug gap. As in my 1.4TSi intermediate
service topic on here , they are set far too wide as supplied pre-gapped to VW at the factory for the charger blown engine, so the spark is weaker and is being blown out = misfire.
I occassionally use in the 1.4TSi as an intermediate, VW's own G 001 700 03 Fuel Additive which was originally for carburettor Icing prevention on my Beetles in the '70's. VW now use it for that, plus corrosion prevention, intake cleaning (not relevant on 1.4 due to direct injection) and injector cleaner. It works.
C.