Question about 1999 Mazda 626
The car had a problem for awhile with me having to baby it just to get up to speed with the accelerator and cleaning the spark plugs or replacing them just so the car would get somewhere..Eventually the car got to the point where if I gave it to much gas it would cut out and shut off... I was told the timing could be off so I replaced the belt crank PS and Cam PS & coil pack just for good measure.. Car has spark and fuel Aaaand cranks but yet no start..
When you say it has fuel, have you checked fuel pressure at the rail ?
Has the fuel filter been replaced in the past couple of years ?
Have you tried spraying starting fluid into the throttle body ?
Posted on Dec 09, 2012
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Posted on Jan 02, 2017
SOURCE: Hard start problem
I had the same problem right after installing a 45 DCOE on a stock 12A. The problem was the carburetor was not properly tuned. To tune it, refer to "Weber Carburetors", by Pat Braden, from HP Books. The main thing I had to do was adjust the idle mixture screws. Seat them lightly (screw them all the way down, but not tightly), then turn both of them out 3 and a half turns. Pull the choke and turn the key WITHOUT pumping the gas pedal. You may also need to adjust the idle speed screw, I've found that about 900 or 1000 rpms is a good idle speed for my particular aplication, but when I first started it with the Weber, I had it at 1500 rpm. It took me about a week of driving it and adjusting it to different settings to get it to run well with a reasonable idle speed. Good luck!
Posted on Nov 01, 2008
check timing belt timing on the cam gear and crank gear. if timing belt has 60000 miles or more. if they dont break first. they stretch enough jump out of time.
Posted on Apr 09, 2009
Hello, I am going to make a few assumptions here. The vehicle has an electric fuel pump and you replaced it. The vehicle has fuel injection. The engine is actually cranking, just not starting, when you say "car still won't crank". You are getting fire to the spark plugs at the plug ends. You checked the fuel pump for power at the pump. No power, then you back traced the wire to the fuse block and checked the fuse to see if it was blown. If the fuse is good back trace the power to the ignition switch and/or ECM for power. You have power at the pump, check the ground and make sure it is connected properly. Will the pump run when someone turns the key on? Pump runs, check fuel manifold for pressure. No pressure, check the fuel filter for blockage, or replace it. Fuel pump doesn't run, new replacement pump is defective. There is usually some type of control module for the fuel pump on fuel injected vehicles. Good Luck, RAC
Posted on Apr 18, 2009
just be careful i almost set my rx on fire i was told to get a tow to start it all that happened was the unused fuel was pumped it the cat and the whole lot was glowing orange when i stoped the car. the fault was a coil pack it cost me loads to get repaired
Posted on Dec 19, 2009
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