hawkmiller
New member
5.7 MERCRUISER MISSES & R
5.7 MERCRUISER MISSES & RUNS ROUGH. Checked the plugs & changed the wires no difference. When I pull the spark wire from two of the cylinders there is no change in the engine idle or sound .There is plenty of spark.My friend suggested a compression check? Any help much appreciated
5.7 MERCRUISER MISSES & RUNS ROUGH. Checked the plugs & changed the wires no difference. When I pull the spark wire from two of the cylinders there is no change in the engine idle or sound .There is plenty of spark.My friend suggested a compression check? Any help much appreciated