Question about 2000 Mazda Protege
00 mazda protage check engine light came on the code was check at autozone and they said misfire cylinder but just had sparkplugs(platniumplugs) and wires changed and cadilcoverter changed and sway bar's fixed and new belt's ..it comes and goes with the check engine light ..but when it is on just seem's a lil ruff when idle but running run;s great it also has 286,746 miles .. so if anyone could help please it's my baby .love her and don't want to get rid of my car!!
Could be a defective plug or clogged injector What cylinder was IDd. Isolate the problem cylinder swap the plug from a good cylinder see if the miss moves with the plug,if not try having the injectors cleaned. That should get the zoom zoom back.
Posted on Apr 17, 2009
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Posted on Jan 02, 2017
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2004 Marauder and 2003-2004 Mustang vehicles built before 12/19/2004 equipped with 4.6L 4V/5.4 4V engine may exhibit a runs rough, lacks power, and engine misfire, prompted by a MIL light and DTC codes P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, and P0316.
Diagnose engine for engine misfire concern. If diagnostics determine an engine misfire which is characterized by leakage through exhaust valve(s), only replace the affected cylinder head(s).
SERVICE PROCEDURE FOR VEHICLES WITH RUNS ROUGH/MISFIRE CONDITION:
1. Perform relative compression check on all cylinders. If abnormal, check cylinder leakage and actual compression for "low" cylinders refer to Workshop Manual (WSM), Section 303-00.
2. If leakage/compression check indicates a valve train concern, per valve train diagnostics in WSM, Section 303-00, replace cylinder head and cam assembly, pipe plugs and timing chain tensioner, per procedure outlined in WSM, Section 303-01.
3. If cylinder leakage and compression tests are inconclusive, perform misfire diagnostic, per TSB 05-22-8.
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