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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

bad vacuum leak where to start???

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Old 09-21-2011, 05:26 PM
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bad vacuum leak where to start???

Well I have been under the hood for 2 hours trying to find this damn leak and can't find it any help?? The good news is it sounds like I have a cam in this som ma bitch
Old 09-21-2011, 05:32 PM
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Start spraying carb cleaner or ether around the vacuum lines and when you hear a change in the idle, you wil have found the leak...
Old 09-21-2011, 05:37 PM
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How do you know it's a vacuum leak?
Old 09-21-2011, 05:46 PM
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I not 100 percent but I can hear it sucking sounds like vacuum
Old 09-21-2011, 05:58 PM
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I sprayed the whole motor down with starting fluid and it's still running rough and rich. It's idling about 600
Old 09-21-2011, 06:01 PM
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I also just changed the water pump but I don't think that has anything to do with it
Old 09-21-2011, 07:25 PM
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is your timing set right? might have jumped, injectors clean? it can be more then a vaccum leak, also some vaccums are connected to the brake booster which has a seal that tends to go bad, thats what happended to mine causeing it to run rich again mines carbed but its the same principle, good luck!
Old 09-22-2011, 07:06 PM
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Well good news I started her up today still ran rough .decided to take a little cruise I'm pulling back in the driveway she started purring like kitten
Old 09-23-2011, 12:53 AM
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If it sounds like it has a souped up cam, could be the EGR valve sticking open or a bad vacuum distribution disc.
Old 09-23-2011, 06:10 AM
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I thought something like the egr or pcv is there a way to delete this emissions crap??
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