5 symptoms need help diagnosing, added a problem... probably culprit |
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5 symptoms need help diagnosing, added a problem... probably culprit |
steveherman |
Oct 17 2010, 08:36 PM
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#1
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Member Group: Members Posts: 380 Joined: 12-September 09 From: Kissimmee Florida Member No.: 10,799 Region Association: South East States |
Working on a 1974 2.0 d-jet
-symptom 1- when i start it... idle is very low no where near the 1600 rpm as Brad mentions -symptom 2- low idle...like 550 rpm -symptom 3- when coming to a stop it almost dies -symptom 4- stomp on gas when sitting and driving it goes blah... then takes off. -symptom 5- as it warms up loses a little power things to note: -there are 20 clicks when pushing down accelerator so tps is correct -timing and dwell were checked today and they were within spec. -lifters just adjusted |
swl |
Oct 24 2010, 08:01 AM
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#2
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Senior Member Group: Members Posts: 1,409 Joined: 7-August 05 From: Kingston,On,Canada Member No.: 4,550 Region Association: Canada |
I don't think the difference means anything. The top is the sensor port. On high vacuum it just opens a shunt allowing more air from the air filter into the plenum. Shouldn't matter which way the bottom 2 go.
I agree with you. Vacuum leaks cause high revs not low. Have you tried th air bypass screw to bring up the revs? The stumble on accel might be the advance. Have you checked to see if it si working? |
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