Clean the air filter and check the spark plugs for condition. They might need to be changed. Fill up with premium gas next time you need it. Also possible the fuel injectors are getting clogged. That's why using premium gas for next fill up and using a fuel system cleaner can definitely help.
If you have a test light, check if the ecu is receiving power and ground. If that is good, and all fuses are ok, then check the crank position sensor. Make sure its connected, not damaged. If you can, use a scanner and check for any pending trouble codes. Use www.floptical.net/mazda/ .That is...
The check engine light was most likely for incorrect coolant flow. The guy who sold it to you probably had an overheat problem that could not be figured out or was too much to fix. So by removing the thermostat, it made the car run at a fairly normal temp by creating more coolant flow to the...
Theres only one gasket for the thermostat and that is the black o ring that goes around the thermostat. If they sold you any other gasket its for the thermo housing to the block. To correct the leak, make sure the o riing gasket is properly installed on the thermostat, the two bolts are tight...
The j-spec intake cam is not the same as the turbo fsde. It is the same as the fsze which was a slightly different motor only offered in the Asian market.
I would check vacuum pressure and fuel pressure. Check any vacuum hoses for cracks, splits or just being disconnected. Also check the intercooler hoses for being disconnected or cracked if they are the oem plastic hoses.
DTC P0660 VICS solenoid valve circuit malfunction
STEP INSPECTION ACTION
1 VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Check for related Service Bulletins availability.
• Is any related repair information available?
Yes Perform repair or diagnosis according to available repair...
DTC PO660 is related to the vics solenoid and or wiring. PO301 is a cylinder 1 misfire. Even though the engine light is not on now, the scanner is picking up those 2 codes, meaning they are pending. The engine light will soon come on.