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'91 Mazda 626 Hard Starting
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CTC01
User
Nov 3, 2009, 10:14 AM
Post #1 of 7
(3842 views)
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'91 Mazda 626 Hard Starting
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I recently purchased a '91 Mazda 626 255k miles 2.2l. I have installed new plugs, fuel filter and air filter. I have also sealed up the air tube from the air filter/air meter to the intake (learned from years of driving another '91 626). I have about 35psi fuel pressure at idle, pressure goes to 42 when throttle is opened. Once I get it started it runs excellent and once warmed up it restarts well. I have installed a new temp sensor and swapped out the distributor with the one from my daily driver with no change in problem.
I'm running out of ideas. Any thoughts?
Thanks
Todd
94 Merc Sable 188k
91 Mazda 626 228k
89 Mazda B2200 177k
74 Torino Elite
70 Torino Cobra
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Hammer Time
Ultimate Carjunky
/ Moderator
Nov 3, 2009, 10:57 AM
Post #2 of 7
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Re: '91 Mazda 626 Hard Starting
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That's a nice list of parts you threw at it but you never stated what the problem is that your trying to fix.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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CTC01
User
Nov 3, 2009, 11:33 AM
Post #3 of 7
(3835 views)
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Re: '91 Mazda 626 Hard Starting
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'91 Mazda 626 Hard Starting
94 Merc Sable 188k
91 Mazda 626 228k
89 Mazda B2200 177k
74 Torino Elite
70 Torino Cobra
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Hammer Time
Ultimate Carjunky
/ Moderator
Nov 3, 2009, 12:54 PM
Post #4 of 7
(3833 views)
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Re: '91 Mazda 626 Hard Starting
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If that's all the effort you can put into you own problem then don't expect us to beg you for information.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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CTC01
User
Nov 4, 2009, 6:15 AM
Post #5 of 7
(3828 views)
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Re: '91 Mazda 626 Hard Starting
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It cranks good I have spark but it STARTS HARD when cold, What else do you need to know?
94 Merc Sable 188k
91 Mazda 626 228k
89 Mazda B2200 177k
74 Torino Elite
70 Torino Cobra
(This post was edited by Hammer Time on Nov 4, 2009, 6:44 AM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Nov 4, 2009, 6:51 AM
Post #6 of 7
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Re: '91 Mazda 626 Hard Starting
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Is the check engine light coming on?
What does it take to get it started?
How long does it have to sit for it to be a problem?
What does it sound like when it first starts?
How old are the cap. rotor and wires?
With that mileage have you taken a compression test?
Your asking us to diagnose a problem sight unseen. We need every piece of applicable information possible. Two words in a title doesn't tell us anything.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Loren Champlain Sr
Veteran
/ Moderator
Nov 4, 2009, 5:27 PM
Post #7 of 7
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Re: '91 Mazda 626 Hard Starting
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I'd have to agree with Hammer on this one. With the fuel pressure guage connected, does the pressure bleed off after turning off the ignition? Make sure that you replaced the CTS, not the engine temp. sensor. One (the CTS) is for the computer, the other is for the guage. Being a '91, it may not be possible to get live data, but would be interesting to know what the computer is seeing for temp. when cold and warm? The CTS can be tested with an ohmeter. Certain amount of resistance, at different temperatures. If you need a chart, we can supply it.
Loren
SW Washington
(This post was edited by Loren Champlain Sr on Nov 4, 2009, 5:29 PM)
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