Mazda 3 Engine Shudder - please help..

cazduff

Member
Hi, Im new to this site so be gentle ha ha.
I was hoping someone could help me out. I have a 2005 Mazda 3 that when it starts sometimes it does this really big engine shudder. I've taken to Mazda 3 times and had it checked. First they said it was the fuel pump which they removed and replaced with a new one. Second time they said it was the engine mounts which they replaced. Third time they had no idea and couldnt figure it out. It is getting really annoying and I just want an answer. My Dad teaches mechanics and seems to think it may be the spark plugs but according to Mazda tech's they checked them and said they were fine as well as the internal computer. Does anyone have any ideas as to what it might be???? I've even changed petrol and the same thing happened...

Please help...

Caz
 
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