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Hesitation going after coming to a stop 700 1991

posted by  Bonzo on  Fri Jun 28 07:18 CST 2013
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last visit: Fri Aug 29 15:50 CST 2014
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Starts and runs (takes 2 cranks when cold in the morning - my son was told the fuel pump was going - has been doing that for months.) The last few days, when accelerating from rest has been hesitating. Actually started very subtly about a week ago. Once I get above 25-30 mph seems to run OK, will also run 65 on the freeway. Ideas? Thanks.








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Hesitation going after coming to a stop 700 1991

posted by  Milanomike on  Sat Jun 29 09:30 CST 2013
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Hi, not sure if this is Bosch or Regina, but if Regina, I'd check fuel pressure at the schrader port on the rail. You need 35 at idle, 45 psi with vac line diconnected from FPR. Pressure should also increase as you blip the throttle. Mike








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Hesitation going after coming to a stop - can I use 240 wires for diagnosis 700 1991

posted by  Bonzo on  Fri Jun 28 10:41 CST 2013
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last visit: Fri Aug 29 15:50 CST 2014
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I'm thinking it might be a spark plug wire, but I don't have another 740, just a few 240's in the family. Can I, for diagnosis, temporarily swap in 240 wires?








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Hesitation going after coming to a stop - can I use 240 wires for diagnosis 700 1991

posted by  Onkel Udo II on  Fri Jun 28 12:01 CST 2013
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last visit: Fri Oct 24 08:50 CST 2014
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If they have the same motor and distributor location...no problem. Is it Rex/Regina or Bosch?

Depending on what hesitation feels like, check your tranny fluid (assuming it is an automatic). Even 1/2 low can cause cavitation that would feel like a hesitation even thought the engine revs just fine.

Did you pull the codes?

When was the last cap/rotor/plugs tune up?






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