Buzz test AE results. - Ford Powerstroke Diesel Forum
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post #1 of 7 Old 03-27-2012, 02:15 PM Thread Starter
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Buzz test AE results.

Helping out another local member, he's got a '05, EGR delete, welded close EGR valve, the rest of motor is stock. 200k on original injectors.

He's having issues with slight miss when warmed up, and occasional motor stumble when at operating temp and cruising down the road. FICM shows 48v output, FICM input at 13.5v. The only codes to pull up is 3-4-5-7 glow plugs. When cold start up, he had to crank it twice to get it started, but only did this one time.

I was thinking possible stiction issue, he did try the Archoil and the motor ran better, but symptoms did come back.

So I went to do a buzz test with motor at operating temp, initiated the buzz test, we got 3 injectors on pass side to buzz, but that was it only 3. In between the injector buzz sequence of the cylinders, there was just clicking instead of buzzing.

So at this point we are thinking heavy stiction, which he is going to try Rev-X and load test batteries, then we will swap in my FICM to test his truck before he starts digging into the injectors.

I did find some useful info from M-chan68 on this link.
Injectors, how to test or diagnose?

Normally when doing a buzz test on my truck, all 8 injectors will buzz in sequence. On his truck, only 3 buzzed with clicking in between.

So my question is, would bad stiction cause the buzz test to fail? Or is their deeper issues with his injectors.

Thanks, Rich

2004 F350 CC DRW King Ranch
X-3 tunes by DJ'S,QT,GH,ID. Gryphon FICM tunes, ARP studs,Stage 1turbo,ATS coolant recirc lines,Swamp's 48v ficm,coolant filter,AD2,Snow Perf stage II,EGR delete,4" turbo back straight pipe,S&Bintake,Quad "A" pillar autometer gauges,Suncoast Tri Disk Conv.,Billet input shaft,Suncoast superduty rebuild kit,Trans-go shift kit,Mag-Hytec trans pan,CFM+ elbow,ccv mod,15K reese 5er,17" LCD TV/DVD,Cobra 29 Nitewatch CB
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post #2 of 7 Old 03-28-2012, 06:32 AM
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Pretty sure that the buzz test cycles the spool valves on the injectors, so if they aren't buzzing, you either have severe stiction or a problem with the circuit to the injector (wiring or FICM) like you suspect.

Shawn Carlson
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2005 F250, CCSB, 6.0 PSD, FX4 (The Sweet Unit is white)
2008 F350, CCLB, 6.4 PSD (Brad-the wife's truck is black)




Engine Mods:
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4" MBRP Exhaust
MTW Stage 1 Turbo
Bulletproof 53V FICM
BulletProof EGR Cooler
BulletProof Water Pump
Riff Raff Intercooler Boots
Gogo Diesel Direct Drive Solenoid
BulletProof All-Aluminum Radiator
BulletProof All-Aluminum Intercooler
BulletProof Oil Cooler System w/ Bypass Filter
SCT w/ Custom Tunes (TSD, DJ's, Innovative, Gearhead, QuickTricks)

Exterior Mods:
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Icon Adjustable Trac Bar
Firestone RideRite Air Bags
BDS Dual Steering Stabilizer
Aluminum Finned Differential Cover
Reese 16k Manual Slider 5th Wheel Hitch
Icon 2.5" Leveling Kit w/ F-350 rear blocks
20" BMF Novakanes wrapped in 33" Nitto Terra Grapplers
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post #3 of 7 Old 03-28-2012, 06:42 AM Thread Starter
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Thanks Shawn, I've never experienced stiction, so I'm unsure of the actual symptoms.

2004 F350 CC DRW King Ranch
X-3 tunes by DJ'S,QT,GH,ID. Gryphon FICM tunes, ARP studs,Stage 1turbo,ATS coolant recirc lines,Swamp's 48v ficm,coolant filter,AD2,Snow Perf stage II,EGR delete,4" turbo back straight pipe,S&Bintake,Quad "A" pillar autometer gauges,Suncoast Tri Disk Conv.,Billet input shaft,Suncoast superduty rebuild kit,Trans-go shift kit,Mag-Hytec trans pan,CFM+ elbow,ccv mod,15K reese 5er,17" LCD TV/DVD,Cobra 29 Nitewatch CB
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post #4 of 7 Old 03-28-2012, 06:57 AM
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With only 3 actually buzzing, I'm thinking he should replace all 8 injectors. With 200k miles on them, the internals aren't as precise and they won't be building 28,000 psi of injection pressure at WOT.

Shawn Carlson
EvilEye@powerstroke.org

Proud Navy Vet
2005 F250, CCSB, 6.0 PSD, FX4 (The Sweet Unit is white)
2008 F350, CCLB, 6.4 PSD (Brad-the wife's truck is black)




Engine Mods:
Fluidampr
CCV Reroute (Reinstated)
4" MBRP Exhaust
MTW Stage 1 Turbo
Bulletproof 53V FICM
BulletProof EGR Cooler
BulletProof Water Pump
Riff Raff Intercooler Boots
Gogo Diesel Direct Drive Solenoid
BulletProof All-Aluminum Radiator
BulletProof All-Aluminum Intercooler
BulletProof Oil Cooler System w/ Bypass Filter
SCT w/ Custom Tunes (TSD, DJ's, Innovative, Gearhead, QuickTricks)

Exterior Mods:
Bilstein 5100 Shocks
Icon Adjustable Trac Bar
Firestone RideRite Air Bags
BDS Dual Steering Stabilizer
Aluminum Finned Differential Cover
Reese 16k Manual Slider 5th Wheel Hitch
Icon 2.5" Leveling Kit w/ F-350 rear blocks
20" BMF Novakanes wrapped in 33" Nitto Terra Grapplers
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post #5 of 7 Old 03-28-2012, 07:11 AM
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when doing the buzz test in the 03-07 you will have all injectors buzz followed by a click test on each injector. It doesn't buzz each injector like it did in the 7.3l motors. Even when using IDS it does this. I would say to replace the injector that doesn't click when hot and see if that fixes it. Also most likely at 200k all 8 injectors are going to need replace as once one is replace the other "might" start showing up as a contribution dtc but that is a wait see. Good luck I have two left in mine to replace I never had a DTC but tried revx and it did work but once I started to replace with new ford remains and the upgrades done to then I could really see a difference in power even stock tuned. so it should go like this "(all 8 Buzz) (1Click)(2Click)(3Click)(4Click)(5Click)(6Click)(7 Click)(8Click) (all 8 Buzz) (1Click)(2Click)(3Click)(4Click)(5Click)(6Click)(7 Click)(8Click)" Here is a video of mine doing the buzz test (turn up your speakers) injector buzz test

2003 F350 6.0L KR CCLB DRW 4x4 auto - bone stock
Edge insight, EAS EGT, turbo timer
Strategys, DAX0-1;TEC0-7
Ford Pilot injection

2005 F250 6.0L XLT CCLB 4x4 auto
Strategys, UPV1;URV0;CYH0-7
PowerMax-KTS 11 blade SP Billet
ARP studs, BPD EGR cooler, 04 uppipe
Banks intercooler system, Airaid Dropin
4" turbo back Magnaflow exhaust w/4" DP
Edge insight, EAS EGT, turbo timer
SCT 3015
ID custom tunes
ID Pilot-Injection
ID FICM tune

Last edited by U235a4; 03-28-2012 at 07:23 AM.
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post #6 of 7 Old 03-28-2012, 07:17 AM Thread Starter
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That's what threw me off, only three injectors buzzed, but all 8 clicked.

I'll keep you all posted, he's gonna try the cheapest route first (Rev-x). After that, injectors may be nesassary.

2004 F350 CC DRW King Ranch
X-3 tunes by DJ'S,QT,GH,ID. Gryphon FICM tunes, ARP studs,Stage 1turbo,ATS coolant recirc lines,Swamp's 48v ficm,coolant filter,AD2,Snow Perf stage II,EGR delete,4" turbo back straight pipe,S&Bintake,Quad "A" pillar autometer gauges,Suncoast Tri Disk Conv.,Billet input shaft,Suncoast superduty rebuild kit,Trans-go shift kit,Mag-Hytec trans pan,CFM+ elbow,ccv mod,15K reese 5er,17" LCD TV/DVD,Cobra 29 Nitewatch CB
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post #7 of 7 Old 03-28-2012, 07:26 AM
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Quote:
Originally Posted by Lilpooh View Post
That's what threw me off, only three injectors buzzed, but all 8 clicked.

I'll keep you all posted, he's gonna try the cheapest route first (Rev-x). After that, injectors may be nesassary.
if you didn't see I updated my post with a video

2003 F350 6.0L KR CCLB DRW 4x4 auto - bone stock
Edge insight, EAS EGT, turbo timer
Strategys, DAX0-1;TEC0-7
Ford Pilot injection

2005 F250 6.0L XLT CCLB 4x4 auto
Strategys, UPV1;URV0;CYH0-7
PowerMax-KTS 11 blade SP Billet
ARP studs, BPD EGR cooler, 04 uppipe
Banks intercooler system, Airaid Dropin
4" turbo back Magnaflow exhaust w/4" DP
Edge insight, EAS EGT, turbo timer
SCT 3015
ID custom tunes
ID Pilot-Injection
ID FICM tune
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