cosworth backfire
#1
old school is good
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cosworth backfire
Just built new engine and been mapping it. All is well untill about 6000rpm. It has a backfire for a few revs then clears up on load and in neutral. Number one plug is always coaked up black. We've checked /swapped injectors. Plugs, coil, leads,the map looks spot on. Any ideas please I'm lost now.
#2
PassionFord Post Whore!!
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When dose it do it when you floor it or when you drive it up the revs slow . I ask this as my 3dr had this for a long time it would drive spot on all the way up the revs but when i booted it it would back fire hi up in the revs . It turnd out to be the leads were bracking down and they were to close togever when i moved them apart it sorted it i did put a new set on when i found this out . im all so running wasted spark
#5
PassionFord Post Whore!!
iTrader: (3)
Its the coil pack mate
im bilding a focus cosworth and we started it up for the first time about 4 weeks back and number 4 was not running right it was sparking but not firing the plug when it was in the head so i put the coil pack on the wifes KA and that run the same . i put a brand new one on and it ran spot on
im bilding a focus cosworth and we started it up for the first time about 4 weeks back and number 4 was not running right it was sparking but not firing the plug when it was in the head so i put the coil pack on the wifes KA and that run the same . i put a brand new one on and it ran spot on
Last edited by COLEYST200; 14-09-2012 at 05:19 PM.
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