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buick regal wont start
04-11-2014, 04:53 PM (This post was last modified: 04-11-2014 04:53 PM by kevinsmith945.)
Post: #1
buick regal wont start
i got a 1994 regal with 3.8 motor with 77000 miles it starts fine in the morning but after driveing to work about 30 to 45 mins and the car sits for about 45 mins it wont start unless i spray starting fluid in the throttle body then it runs fine... it does this all the time
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04-11-2014, 08:46 PM
Post: #2
RE: buick regal wont start
I suspect if you let it sit all day while you work it starts fine in the evening, right?

I'll bet if you check the fuel pressure it's not up to snuff and this time of year (spring) there's enough heat in the mid day to cause vaopr lock after a half hour or so. Higher fuel pressure usually helps this issue.

Quick test: When it doesn't start, try working the key several times between off and on with a few seconds wait between. (listen for the pump to run about 2 seconds each time) This will cycle the pump and purge the system. If that seems to help then head to checking the fuel pressure for that weak pump.
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