Re: Cruise mode burbble!
[Re: Lew]
#1284450
08/13/12 11:13 AM
08/13/12 11:13 AM
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Joined: Dec 2009
Posts: 20,640
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,640
in a cattle trailer down by th...
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Well the best I can offer with the info given is it's probably a carb issue, unless the cam is big, then it might not be...
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost coming soon!
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Cruise mode burbble!
[Re: Guitar Jones]
#1284451
08/13/12 11:21 AM
08/13/12 11:21 AM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
Too Many Posts
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Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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too much fuel maybe?
I THINK I know the sound you're referring to. my truck does it when I go closed throttle coasting/downshifting, the exhaust pops and burbles. but as soon as the engine computer goes into "coast down shut off mode" and kills the injectors, the burbling and popping stops.
however, my truck never made the sound at part throttle cruise.
**Photobucket sucks**
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Re: Cruise mode burbble!
[Re: 70Cuda383]
#1284452
08/13/12 12:09 PM
08/13/12 12:09 PM
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Joined: Aug 2003
Posts: 43,157
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,157
Bend,OR USA
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Quote:
too much fuel maybe?
I THINK I know the sound you're referring to.
OP,I know that sound well, it is really rich at part throttle cruise. I have a wide ban O2 system on my car, all the Holley Dominator carbs and some of the 850 D.P. carbs. are bad at part throttle, they read 11.2 AFR or so depending on which carb. It is fixable, you need to restrict the idle and part throttle fuel feed and or open up the intermediate air bleeds if it is a three circuit carb.   I have restricted the idle and part throttle fule feeds on several of my two and thre circuit 1050 Dominators to .039 on the I.F.F and .059 on the I.F.F.on the two circuit dominator List # 9375 non HP and the same on the 9375 HP as well as opening up the primary intermediate (center) air bleeds to .096 That makes mine idle at 14.8 to 16.3 at 1000 RPM and have 14.3 to 16.1 AFR at 1700 to 2500 RPM, really responcive and nice clean spark plugs all the time now
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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