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William Hiatt
Dodge Dakota
JOIN HERE
10/19/2002
17:59:30
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 Subject: HO CAM Saga Still!
IP: Logged
Message:
Ok, I still have the missing/pinging problem on my 4.7L with HO CAMS.
Here's the details:
1) It pings at midrange/heavy acceleration
2) It misses at WOT on Cylinder #8
3) Feels dead at high RPMS (Above 4000)
4) It gets REALLY REALLY LOUD above 3500-4000 as well. Way louder than with a stock cam
I have a Mike Leach flash, FMS 19# injectors, custom exhaust, 4" IP air intake and a F&B TB. I had Mike Leach retard the timing 3 1/2 degrees and I still have the same symptoms (albeit less pinging)
So, I'm going to order a BRAND NEW set of HO cams and put those in on Veterns Day and see what happens.
I would like some advice from others to find out if anyone knows anything that I don't or should be looking at. I've already checked/changed plugs, checked the coil and everything comes out fine. I am running 91 octane. Why would just cylinder #8 do it? Could the cam be off or misground?
Thanks
william
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CW
GenIII
10/19/2002
19:16:56
|  RE: HO CAM Saga Still!
IP: Logged
Message:
Make sure that right hand sprocket is timmed properly.
4.7 HO, CW style
2001 4.7 5sp 3.92 LSD
Ported 68mm TB, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" Z-tube, Roadmaster active suspention, Removed Third cat, Electric fan Convertion, HO cams, Robert shaw 180 therm, HO intake manifold.
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Chris
Dodge Dakota
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10/21/2002
09:20:56
|  RE: HO CAM Saga Still!
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Message:
Bill,
Have you checked the Rocker arms? Are they on correctly and not seized up or worn? are the valves worn, springs look good??? I have gone through the process mentally about a dozen times and cannot think of anything on the install that would cause this.... What about the factory cams, is the #8 worn abnormally?
Chris
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gsmarquis
Dodge Dakota
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10/21/2002
15:43:53
| RE: HO CAM Saga Still!
IP: Logged
Message:
I agree with CW, my duranog did the same thing until i took valecovers off and double checked my cam gear timing. i was about one tooth off on the gear, now its perfect and more powerful.
www.marquis.gasupusa.com
21% off all gas + cash & free gas commisions!
marquisdurango@aol.com
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Demon Dakota
DakotaEnthusiast
10/21/2002
16:27:47
| RE: HO CAM Saga Still!
IP: Logged
Message:
If it was running correctly before you installed the cams, then it wasn't the cam that's causing the problem. It has to be in the installation process. It's definitely off on the cam sproket teeth (or whatever they're called).
K&N Drop in AF
True Dual exhaust and removed third cat
HO Cams & HO Intake
Modified TB
Autolite 3923 Plugs
TPS @ .76 VDC
IAT Adjuster Mod
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jmay
Dodge Dakota
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10/26/2002
20:59:31
| RE: HO CAM Saga Still!
IP: Logged
Message:
An old OHC timing ritual; line up the timimg marks, turn the engine over by hand several revolutions and re-check your marks. Nine times out of ten your a tooth off. Re-align the marks, and turn it over and check a second time.
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