Tag: BCPR7ES

New spark plugs, rotor arm and distributor cap

44,000 miles

ProductQuantityPriceTotal
4 x NGK VHPD Spark Plugs BCPR7ES  1£13.95£13.95
S1 Elise Distributor Cap A111E6037S  1£12.95£12.95
Rotor Arm  1£6.95£6.95
Titanium & Platinum Spark Plug Adjuster  1£5.95£5.95
Sub Total£39.80
Standard Delivery£6.95
VAT£9.35
Total £56.10

From elise parts.

Spark plugs gapped to 0.9mm and tightened to 25nm (18ft/lbs)

Persistent misfire – fouled spark plugs

Took the car for a drive yesterday and noticed as soon as it fired on all four cylinders it started a misfire almost immediately.  Alowed the car to warm up and the misfire persisted including a short drive to see if it would clear.

I checked the HT leads nad distirbutor cap which all semed fine and rang Rob at RatRace for advice.  I was sceptical when he suggested that  plug may have fouled but did as he said and checked them.  I was surpised to find 3 of the spark plugs were fouled i.e. wet and sooty.

Changed the spark plugs for an old set (NGK BCP7ES) and the car ran fine!  Have ordered a set of BCPR7ES from OPIE Oils for  £10.65 delivered.

I expect this is to do with the engine needing to be set up properly by Emerald (Scheduled for 09/04/2018).  Clearly the engine is running too rich at idle and has fouled the plugs through frequent (cold) starts and not getting up to temperature; because I am keeping the use to a minimum until the engine is mapped.