I have a 2002 ford escape with about 170,000kms. From a cold start she runs perfect. But when i make a stop and park for a short period of time then go to leave is the prob. Starting up is no problem but...
Misfire, From a cold engine you wont have the misfire. When you engine is cold fuel is in demand and it will run great. As it warms up the fuel strategy is to lean it out (proper balance is 14.1 to 1) . At normal operating temperature the spark plug required KV is 15kv. As you accelerate the sparkplug require more voltage from its coil reserve and it delivers and at the same time the engine demads are high in order to accelerate and the spark will seek the easiest path spark plug, now when you come to a stop the demands for spark decrease and it seek the easiest path where is that at ? out through the boot of the spark plug, The vehicle is equipt with what they call COP (coil on plug) along the boot path it deteriates and so does the coil it deteriates .170,000 mile of hard working COP. they are at their worn stage you can find the weak coil with a cop tool because it misfire on acceration your looking at a boot,probable water got in there shorting it out,if it misses at idle its either water in the boot or the boot itself or the cop.
Apr 24, 2011 |
Ford Escape Cars & Trucks