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10-26-2021, 04:49 PM
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#1
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Senior Member
Join Date: Oct 2012
Posts: 363
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PCV Valve and Tube.
1999 V10.
As our Rv is still not really running right, Could the PCV valve if faulty cause any reall running problem. Need to take it off with tube and see if it rattles (according to internet ) and check the tube for splits.
Can find the valve on Rockauto, but no listing for the tube.
If we are going to replace, would like to change both parts so can rule out that bit.
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10-26-2021, 06:44 PM
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#2
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 28,939
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????? ' not really running right " , can you describe what your issue is .
PCV valve and/or tube leak; will have little effect above idle . Engine ECU will adjust fuel injectors to compensate for any extra air entering the intake manifold and keep fuel mixture in range.
Have you looked at plugs and wires ?
I'll assume you have no CEL or stored codes.
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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10-26-2021, 07:54 PM
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#3
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Senior Member
Join Date: Aug 2020
Location: Ohio
Posts: 2,127
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I would be surprised if pcv is it.. if you inspect elbow and find I does need replacement.. try dorman.com.. really any auto parts store .. remember.. you have a ford light duty truck eng and trans bolted to big frame.. so cross reference for 1999 ford f350 or f250.. most of time that works
As stated above.. start with plugs and wires.. or pick up or borrow scanner.. see if that helps..
Clean mass air flow sensor..
Good luck and let us know what you did and maybe better members then me will help you
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2000 southwind storm, workhorse custom chassis with 7.4l vortec
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10-26-2021, 07:59 PM
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#4
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Senior Member
Join Date: Aug 2020
Location: Ohio
Posts: 2,127
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Oh.. and you are right.. it could be a vacuum leak.. that old.. so spend the time.. with good flashlights and inspect all.. I mean all.. vacuum lines.. and where they connect.. vacuum lines do get rotten and they are time consuming to check.. so save yourself a lot of money and do it .. carefully and closely..
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2000 southwind storm, workhorse custom chassis with 7.4l vortec
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10-28-2021, 04:31 AM
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#5
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Senior Member
Join Date: Oct 2012
Posts: 363
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Thanks for replies.
As it was running really erratic, found the EGR valve faulty. Changed it and the EGR solinoid and she ran better but still not right.
As a few google searches for vacuum leaks is to run engine and carefully spray engine start across inlet manifold and hoses to see if engine note changes.
Well it did not so suspect No vacuum leaks.
Does sound like we now have exhaust leak now, but will take a Video of starting and run of engine to see if you can possibly work out a solution.
__________________
Fleetwood Bounder 34J
1999 V10 Triton
Based in the UK
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10-28-2021, 09:29 AM
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#6
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Senior Member
Join Date: Aug 2020
Location: Ohio
Posts: 2,127
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Many times.. the tip of using starting fluids to find a vacuum leak.. does not work.. as good as eyes..
That said.. when is last time TB. Was taken off and cleaned ?
Good luck and let us know what you did and maybe better members then me will help you
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2000 southwind storm, workhorse custom chassis with 7.4l vortec
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10-28-2021, 05:39 PM
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#7
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Senior Member
Join Date: Nov 2014
Location: TEJAS
Posts: 791
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My vacuum leak was on the reservoir tank fitting.
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10-29-2021, 02:16 PM
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#8
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Senior Member
Ford Super Duty Owner
Join Date: Dec 2009
Location: Mcdonough, Ga.
Posts: 5,872
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I was having problems with my 1999 f53. The rubber hose on the passenger side going to the valve had split. Changed it and no more problems.
__________________
1998 Pace Arrow 35 ft. F53 Ford V10 2014 Honda CRV toad
32 years mechanic at Delta Air Lines 15 year motorhome service manager. 3 popups....2 travel trailers....5 motorhomes....loved them all.
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10-30-2021, 05:26 AM
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#9
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Senior Member
Join Date: Oct 2012
Posts: 363
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Quote:
Originally Posted by spyderRV
My vacuum leak was on the reservoir tank fitting.
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We have checked that, all seems well there.
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10-30-2021, 05:27 AM
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#10
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Senior Member
Join Date: Oct 2012
Posts: 363
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We need to take another look at the hose and take it off again to make sure there is not a problem with it.
__________________
Fleetwood Bounder 34J
1999 V10 Triton
Based in the UK
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10-30-2021, 05:30 AM
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#11
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Senior Member
Join Date: Sep 2015
Posts: 1,046
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should throw a lean code if its split.
If you are changing it, change the molded hose, PCV and grommet.
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