The car has a 350 engine automatic with a brand new Edelbrock Performer 600 cfm 4 brrl carb and Edelbrock Performer Intake. I just installed them last week. Car starts and runs fine with no issues. I corrected the timing, changed spark plugs, oil, coolant, and all. But car seems to idle a little funny when I'm sitting at a stop light and in 1st gear. Its a very light irregular idle. When I hit the gas, it accelerates great. Could there possibly be a vacuum leak? Need an experienced mechanics help!! Thanks.
2007-12-27 15:02:34 · 8 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
Just a thought, but it could be the idle air adjustments are a little bit off (the two screws on the front of the carb, not the single idle speed screw on the side). You might try adjusting these until you have the fastest idle out of the engine, then readjust the idle speed.
2007-12-28 03:57:40 · answer #1 · answered by Jason S 5 · 0⤊ 0⤋
verify the situation of your ignition leads, plugs and ignition gadget as an entire, which includes the standards and condenser. first ingredient i could look for is one or 2 defective ignition leads. Condensation on the ignition? would desire to be that once you ran it somewhat the idle got here good, tho that could in simple terms have been the engine going off the choke. Rotating the dist would possibly no longer help, yet you are able to static time an engine with a 12 volt hardship gentle without. a million piston at ideal ineffective Centre. The plugs hearth whilst the standards open, and a 12 volt lamp around the standards will gentle or get brighter at that instantaneous. yet this is the final ingredient i could do. Does it have an computerized choke? possibly the choke isn't working besides because it would desire to. some older motor vehicle are no longer plenty good till warmed up, tho the single i'm questioning approximately develop into an early 50s Mercedes 300S. Carby sparkling?
2016-11-25 21:31:41 · answer #2 · answered by england 4 · 0⤊ 0⤋
Does your '71 have a timing chain? If you've got some miles on it, the timing will be erratic.
Here's a quick check- Leave the key off. Take the distributor off and watch the rotor. Put a big socket on the crank pulley. Turn it one way a bit, then the other. If you can turn the crank about ten degrees and the rotor doesn't move, you have too much slack.
That *could* be your trouble. If so, you need to replace the timing chain.
2007-12-27 15:51:32 · answer #3 · answered by going_for_baroque 7 · 0⤊ 0⤋
Your engine needs AC Delco spark plugs, the AC R45TS plugs and set the gap to .035 in. I believe you had and reinstalled the wrong spark plugs. A 15 year verteran of being a GM mechanic told me and a friend of mine that we had the wrong plugs in both our car and truck when we asked about the same problem. He knew with out asking that we did not go back with the type of plug called for by the manufacture. Both my firend and I changed to the correct plugs and both our problems went away. By the way my friends truck was a 1996 chevy with a 454 and my is a 77 Impala with a 305.
2007-12-27 15:25:10 · answer #4 · answered by 77Impala 5 · 0⤊ 1⤋
There could be a vacuum leak.Check them with a tester from the source to the controlled units.Did you have the dist. vacuum line disconnected and plugged when the timing was set? It also could be socondary wires or the advance unit of the dist.or the point gap.
2007-12-27 15:16:33 · answer #5 · answered by the pump guy 4 · 0⤊ 0⤋
I have a 1977 Lincoln Continental and mine does the same thing. I've found out why. Have your checked your oil pump lately? I've rebuilt the whole upper half of the engine. As soon as I did that it started to act up again. I went through the the carb, throttle, and timing. It turned out to be the oil pump. Oil pumps don't go out on a regular basis. So when they do, it starts acting like your describing. So check the oil pump.
2007-12-27 15:59:10 · answer #6 · answered by Anonymous · 0⤊ 1⤋
most common cause would be a vac leak check and make sure you have the carb bolts tight
you can check for leaks with a can of started fluid but be careful where you spay as it is very flamable- if there is a leak the engine will speed up when it sucks in the starter fluid
2007-12-27 16:17:58 · answer #7 · answered by evac m 1 · 0⤊ 1⤋
it could be a vacuum modulator on your transmission, the part is much cheaper than it sounds and should be easily replaced.
2007-12-27 15:17:51 · answer #8 · answered by Anonymous · 0⤊ 1⤋