Most people only replace their spark plugs only when their engine start rough idling, misfiring, etc. But what they don't realise is, by the time a spark plug gets that bad that it starts misfiring or fails completely, it would have introduced other problems as well, such as reducing lifespan of Catalytic converter, building up carbons on combustion chambers,
The good thing about Peugeot cars with ES9J4S and ES9A V6 engines is that they have a way of telling the owners when Spark plugs are due for replacement, without total failure, misfiring, rough idling, etc.
The radiator high speed fan will stay on longer than necessary, especially when AC is running, or even without AC. Normally, when you switch on AC, low speed fan will run for a long while and high speed MAY come up and goes off for few seconds. But when spark plug in these engines become weak, the high speed fan(s) will switch to high speed almost immediately whenever the low speed comes on with AC running. These two powerful Peugeot engines, ES9J4S & ES9A, runs hotter, when the spark plugs start getting weak, even though the engine may still accelerate well. It doesn't mean all it's well inside the combustion chambers.
The above Bosch Platinum Spark Plug is one of the recommended Spark Plug of ES9J4S & ES9A Peugeot V6 engines, among other 2. These 2 engines basically leave the Show room , when bought new, with this particular spark plug.
The Peugeot part number of the plug is 5960 G0. You will find the part number written on the plug pack, as shown in two pictures above.The factory or recommended plug gaping for these 2 engines is 1.mm
The Bosch Part number of the Spark Plug is FR 8SPP332. You will find the Bosch part number engraved on the plug itself and written on bottom side of the pack, as shown in picture above.
The above picture is ES9J4S or ES9A, depending on which Lion is mounted.
I am happy to announce that the recommended Spark plug (Follow Come) of the ES9J4S & ES9A is now available in Abuja, Nigeria. I bought and swapped them in mine, as a tune up and preventative maintenance, which the previous ones have done about 40,000 km (4 years).
Ikenna, Lion King.
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