Hi. i just completed a total engine overhaul of a mazda 626 fs engine but now it wont start, has spark also can smell fuel at the exhaust, but no hint of starting.Not even a backfire. Am sure that the

SOURCE: Mazda 626 timing

If the timing was 180 out it wouldn't run at all.
Do a compression test to make sure all the cylinders are in good condition, go back over your timing and make sure you aren't overlooking something like two plug leads swapped?, it sounds like it's only firing on two.

SOURCE: '98 Mazda 626 Died and will not start again..HELP

b_bro

Check the Fuel injection system (injectors) and the intake manifold. It might also be wise to check the alternator as well as the starter coil and also the electronic distributor

SOURCE: 626 won't start no spark

Distributor fault, the coil goes down in tyhem and sometimes pops the ECU.

SOURCE: How to Replace a Fuel pump on a 2000 Mazda 626

yes it isn't that much if you buy them.they slide inside the coupler and release the line.

Testimonial: "Thank you didn't know if there was a tool for this."

SOURCE: 2000 mazda 626 wont start,is turning over,fuel

if you have spark at the plugs you need to check fuel pressure at reed valve on fuel rail,you will need at least 55psi to fire injectors,