danihxh
New member
I have an early 1.7 MHA Puma and now that is time to replace the spark plugs I'm thinking of replacing the Bosch Super 4 that the previous owner had with NGK PTR5A-10 or any other platinum one. The ones I'm considering are:
I came across this paper: http://www.sciencedirect.com/science/article/pii/S2090447912000883 and the spark plugs without ground electrodes seem to work better than those with them, but I couldn't find any for the Puma :\ Has anyone tried them?
I have also checked the NGK LTR5IX-11 (Iridium) and they are marked as compatible in some eBay pages: http://www.ebay.es/itm/NGK-IRIDIUM-SPARK-PLUGS-x4-FORD-PUMA-1-7-MHA-ZETEC-S-MHA-MHB-97-LTR5IX-11-/382124912977, but according to the compatibility checker on the page, they are only for the 1.4 and 1.6. Moreover, they are not listed in the official page: http://www.ngkpartfinder.co.uk/car_commercial_search.php?type=SPARK%2520PLUGS&manufact=FORD&model=PUMA&engine=1.7
Also, I know the early Pumas had spark plugs with a 1.3 mm gap that were replaced later with 1.0 mm ones, as they were causing premature wear on the coil pack. Is it fine to swap them with 1.0 mm ones on my early Puma or should I replace some other parts as well?
- NGK PTR5A-10: https://www.oscaro.es/bujia-de-encendido-ngk-5055-4063401-686-p
- CHAMPION OE029/T10 or RES9PYP4: https://www.oscaro.es/bujia-de-encendido-champion-oe029-t10-1238507-686-p
- DENSO PT16VR13: https://www.oscaro.es/bujia-de-encendido-denso-pt16vr13-1260215-686-p
I came across this paper: http://www.sciencedirect.com/science/article/pii/S2090447912000883 and the spark plugs without ground electrodes seem to work better than those with them, but I couldn't find any for the Puma :\ Has anyone tried them?
I have also checked the NGK LTR5IX-11 (Iridium) and they are marked as compatible in some eBay pages: http://www.ebay.es/itm/NGK-IRIDIUM-SPARK-PLUGS-x4-FORD-PUMA-1-7-MHA-ZETEC-S-MHA-MHB-97-LTR5IX-11-/382124912977, but according to the compatibility checker on the page, they are only for the 1.4 and 1.6. Moreover, they are not listed in the official page: http://www.ngkpartfinder.co.uk/car_commercial_search.php?type=SPARK%2520PLUGS&manufact=FORD&model=PUMA&engine=1.7
Also, I know the early Pumas had spark plugs with a 1.3 mm gap that were replaced later with 1.0 mm ones, as they were causing premature wear on the coil pack. Is it fine to swap them with 1.0 mm ones on my early Puma or should I replace some other parts as well?