Volvo RWD 140-160 Forum

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car starts rough after warm-up 140-160 1975

posted by  rabid on  Wed Apr 2 03:22 CST 2003
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ok, this is my first time posting here, so here I go.
I have a 1975 164e, b30-f, with 28k original miles, great condition, but she does not like to start clean after she is warmed up. Almost like a vacum lock. I run the car around for an hour, let sit for about 15 min. and she does not want to start. almost like its not getting fuel. she starts fine from cold though.

things I have replaced:

main relay
fuel injection relay
presure sensor
air auxillary slide
air filter

help me!!!! please. any help would be great...thanks


Bob
milwaukee, wi.
rfk4711@aol.com







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car starts rough after warm-up 140-160 1975

posted by  uniberp on  Thu Apr 3 03:00 CST 2003
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last visit: Mon Jan 31 07:08 CST 2011
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Could be leaky injectors, or cold start injector.
Residual fuel pressure could be forcing fuel into the cylinders after you stop.
If it sits long enough to cool, the dripped gas evaporates and it starts easily.
Don't touch the gas when starting hot.
Maybe disconnect the thermal timer switch, under, behind exhaust manifold.







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car starts rough after warm-up 140-160 1975

posted by  Phil S. on  Wed Apr 2 07:21 CST 2003
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last visit: Fri Oct 24 13:18 CST 2014
[RELATED]

Impossible to diagnose accurately without seeing the car. When it fails to start, inspect the spark plugs and see if they're wet. If so, we can figure out why. If not, I'd suspect a minor vacuum leak.







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