Help please

[mazda323]

I have a 2008 GXP that just randomly started to lurch at lower speeds Also a weird noise on start up like a rattle. Car has 128,000 just I decided to change plugs and clean the TB that didnt help.
thanks

 

[melsg5]

do you have a check engine light on?
how many miles since you changed the fuel filter?
how many miles since you changed the air filter?
Cannt tell over the internet where your rattle is coming from, have you checked for anything loose under the car, exhaust, etc. or under the hood?

 

[mazda323]

Sorry
I have a newer K&N filer so I would say 10k
I have no idea the last time the fuel filter was changed
that was next on my list.

 

[melsg5]

do you have a check engine light on?
did this problem start after switching to the K&N oil filter?
it is a know issue that the oil on the k&N filter can effect the MAS
change the fuel filter

______________________________

 

[mazda323]

No

No CEL
No K&N air filter has been in the car for 10k.
No change to anything before the problem so I changed the plugs. Plugs didnt help. Where is the fuel filter located on a 2008 GXP

 

[melsg5]

digging further there is no serviceable fuel filter, it is part of the pump.
rent or buy a fuel pressure tester to determine if you have insufficient fuel pressure.