1999 engine has 200k -ran fine -cut off other day -found electric fuel pump relay had vibrated loose -fixed -now getting fuel and spark -won’t start - does Mazda have crank or cam sensor that would prevent from starting? timing belt looks ok?
any ideas?
A high mileage engine which suddenly stops running? The first thing that comes to my mind is a slipped timing belt (they rarely, actually, break, you know). You could feel each fuel injector for its opening “click”, during cranking. If there is no click, there is no signal to them to open. 'noid lights are, also, good for checking fuel injectors. Neither check will tell you if they are in correct TIME. Check the crankshaft and camshaft for being on top dead center, compression stroke, at the same time (“timing”). The timing index signal comes from the crank or/and cam position sensors. The first “part” you should get is a Haynes, or Chilton’s repair manual. This “part” will save you TONS of time and money.