I too fell pray to Marshall engines.in September I purchased a remanufactured engine from Marshalls, A chevy 5.7 litre 350, very common motor, the day after my Certified ASE mechanic installed this engine it knocked.
We contacted marshall engines and their respones was simple, do thier diognostic tests and let them know what we found. We found shavings of metal in the engine and on the oil pan plug, the engine oil was dirty looking like the engine was dirty inside to start with and this was fresh oil. Bottom line is we found nothing to indicate the knock, however their was a knock, they told us we had to remove the engine send it back and THEY would determine what was wrong. I was very hesitant and told them so because once they had the engine who knows what they would do or say!? Their response was send it back or go away. We did all the diognostica they asked for and much more, by the way the old engine failed from a spun main bearing, nothing to do with cylinders. So we sent the engine back, Keep in mind this has taken several months to get to this point. They recieved the engine and ten days later said it was cylinder wash which is when to much fuel gets into the cylinders and washes out the oil causing the pistons to scar. This would happen in older caborator engines. This is ridiculous because we put in new fuel injectors and the fuel pump was tested and within pressure specksand, the spark plugs showed no indication of over fueling, their was not one code to indicate the engine was running rich.in fact the engine ran quite well except for the slight knock. We had three seperate mechanic opinions to the problem and they are all the same, given all the evidence it is highly unlikely to near impossibe that this is due to anything other than poor engine quality and poor building. The bottom line is we are getting ripped off. They do not stand behind their products. Better to spend a little more from a respectable company or the dealer rather than go through what we have had to endure at these ripp off artists hands, they are very good at denying claims because they just dont care. Oh and by the way if you want to sue a company from out of your state it is very hard but it can be done, go see your secratery of state, get a certifacate of non filing and then you can take them to small claims.
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