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  #1  
Old 09-20-2010, 01:13 PM
DKING DKING is offline
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Default Help....vacuum leak

So i just finished an engine job,everything is runnin good.No miss good idle good oil pressure.Went for a test drive and runs great.Arter about 10 miles it is ideling about 2k.I go over everything and i dont see anything,but its hissing.I spray with brake cleaner around throttlebodie,injectors,intake go over pcv line.Nothing.Can the plastic intake crack????plz if anybody has any sugg. or has had the same prob.let me know.I dont want to spend hours on this.I do have a nother intake,Should i swap them out????
Thanks all D.K.
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Old 09-20-2010, 01:15 PM
DKING DKING is offline
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its a 2004 ram 1500 4.7 with a 07 4.7 engine.sorry i didnt tell that
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Old 09-20-2010, 01:47 PM
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You're positive that the throttle cable isn't hanging up and causing the problem?
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Old 09-20-2010, 02:54 PM
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yes.I checked that twice.and i cleaned the throttle bodie.
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Old 09-21-2010, 01:07 AM
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Ok,so I go and work on the truck.I use a nother can of brakecleaner to find the vacuum leak.Nothing,so I start over.I remove the throttlebodie,fuelrail and intake.I take my time and check for cracks,lube the o-rings on injectors.replace the o-ring gaskets on intake check throttlebodie for cracks.just do a good check on everything, I put it all back together and no hissing.but it is runing at 1300 rpm.I check all my hoses again then say screw it.I unscrew the idle screw that's set from the factotr bout 1and1/4 turn and it's on 7-800 rpm now,and runnin like a top.can someone tell me what the factory idle is cause I think it's just a tad low....And I thank Mr Randy ram tech for his help....thanks D.K

Last edited by DKING; 09-21-2010 at 01:11 AM.
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