Injector Buzz test basics - PowerStrokeNation : Ford Powerstroke Diesel Forum

Home Today's Posts Mark Forums Read
Go Back   PowerStrokeNation : Ford Powerstroke Diesel Forum > Super Duty 1999-Current > 7.3L Power Stroke Technical Info
Register Members List Timeslips Calendar Auto Loans Sponsors Becoming a Sponsor Mark Forums Read Auto Escrow is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Thread Tools Display Modes
Old 01-09-2010, 09:57 PM
jeromejcp's Avatar
PSN Local
Member's Gallery
Join Date: Aug 2007
Location: Virginia Beach
Posts: 142
Injector Buzz test basics

Howdy all,

I've got a couple of basic questions about injector buzz tests. I know that the terminator scan gauge and the AE will both do them. Now onto the questions

1. Are the same things required for the 'buzz' that are required for the injector to fire when the truck is running / starting? I.E. Voltage, fuel pressure, oil pressure so on an so forth, or just a good solid connection?

2. If you are not getting a buzz with a particular injector or all the injectors but the tach is still moving is that indicative of a failure of the injector(s) or the signal to that injector(s)? Or does it pass if the tach still moves?

3. How many 'buzzes' should there be? I've had one loud one followed by 8 softer ones. I am assuming that it is all 8 buzzing then each individual one.

4. At the end of the 9 buzzes should there be anything else? Reason being is my scan gauge continues to say 'testing' but nothing else happens, even after 5 minutes. Is this a failure of my truck or the gauge?

Thanks in advance, hope this clears some things up about this process.

00 F350 CC LB 4x4 auto. Nitto Terra 285 75 r16 E, Dynatrac free spin hubs, ccv, rancho stabilizer, centramatics, upgraded GPR, DB starter, 2.0 ga pos cable, matching 5th rim, 6637, 4" SS magnaflow, CPR, Scan Gauge, Mag Hytech.

USN VBSS, Burn sink or take a-prize.
Reply With Quote Go to the top
Sponsored Links
Sponsored Links
Old 01-10-2010, 04:58 PM
golfer's Avatar
fueled by Colecovision
Member's Gallery
Join Date: Aug 2007
Location: Nashville, TN
Posts: 2,982
Re: Injector Buzz test basics

1. no (buzz test = electrical continuity test) ie totally POS injectors will "pass" the buzz test if they are plugged in.

2. possibly either an electrical (wiring, IDM, solenoid) problem..or an internal injector issue (mechanical)...tach movement doesn't mean chit

3. 9. all (8 injs) simultaneous and then 1-8 numerically in order.

4. don't know...I would expect after a couple of minutes that the scangauge would return some result (as a scan tool would)...but I've never used a scangauge.
toll free 866-595-8724

click to send email
Reply With Quote Go to the top

(View-All Members who have read this thread : 121
1997F350CCLB, 1bad306, 2000 powerstroke7.3, 2007PSD, 836.9, 89xj, 95F250, 96powerstroke96, Adinas95, andrewv_24, babydoll, beau tn, BeringSeaFisher, bigstroke, bigtoejones, BigWhite97, bsdracing, bulldog01, carsmars, caveman1, cgress, CTFFEMT, cthom388, Diesel Mack, DieselTiger, Dorito, douglasharwood, Drew2010, dsinderson, dswhite, dtreid, dzgrey, dzlstroker, ellisfl09, e_in_tn, fergus, floridastroke, flyin_rhino, fourwheeldrive9, freddie, Fro_911, grecoface, hawghunter, ilh, isak, jamesthebikeguy, james_mtz07, JD3020, jeffie864, Jeffro92, jeremyroff, Jgman141, Jnalaplace, JohnnyBeGood, johnsdeere, KingCrabb, kolb, lght1, lightnin, lms, LT313, MATREDGT, MColeman, micky_blue, NE-STROKE, NoahA, ntruderrider, nuke tech, Nuzzlenut, oldbluef250, ol_blue97, opieg01, PAbowhunter, PeteTx, Plumbnman, PSDOWNER, rich in co, rmckee242, roadstar, Roush4_6, rtc0360, rtm038, RyanG85, Satan's chariot, saw4sun, ServiceTech, ShogunRider, sixpack1, skippy969, smags, smokin97, Soledad, southmike, Splash, stlhdfishr, strokefreak, Stroker02, strokin340, Sworddylan, SWVa, Tampa450, Terrafirma57, texans, Texla, theGreenHornet, timar, tongboy, TSiZj, twstmup, userrmr, USMCNICK, vic32ft, walkerblayne, wildbillcody97, willholl79, wishbone, Woodnthings8, yavorssj, zusmc
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT. The time now is 04:30 AM.

Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.