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when I first stairt her up it misses, then it evens out after 10 to 15 min then it stairts missing again, it will smothen out with full throttel then it good again?...back and forth. I have replaced and tested everything I can think of.Any ideas... if not ,its to the garage!
 

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when you first start it up it misses because it is tryign to get going... normal to some extent, not good, but not bad. This should take maybe 10-15 seconds.

it evens out after some time because there are alot of devices to help it in the warm-up phase.. normal.

it has trouble after fully warmed up... an idle problem.

Yo probably have a vacuum leak. Do this test. Remove the oil filler cap on top of the valve cover. The engine should die. If it does not, but continues to run sluggishly, it is sucking in air from someehere that is ont goign through the Air Flow Meter. Could be a bad CPV hose, inltake bellows, something.
 
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