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05-27-2011
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#1 |
 
Join Date: May 2007
Location: Westminster, Maryland
Posts: 3,689
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Solution to my misfire problem was a crimped wire to # 1 Injector
I have been trouble shooting a misfire and lean fuel problem on my 1993 ZR-1 for a while. I finally found and corrected the problem.
The wires to #1 primary injector got pinched between the plenum and the injector housing on a previous plenum pull and crushed the insulation on the wires and blew the INJ#1 fuse. I repaired the insulation, but missed that the wire was damaged about an inch further up the insulation. The result was that #1 Primary and Secondary Injectors were not operating. Here are some pics of the final repair:     Final result, QUASARZ is running better than ever now that I can get to see the result of Phil's Plenum and IH porting. Jim
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If it isn't fun, you aren't doing it right! 1990 Black ZR-1 - sold 1993 Quasar Blue ZR-1 1994 Competition Yellow ZR-1 1995 Dark Purple ZR-1 Maryland State Coordinator WAZOO Member |
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05-27-2011
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#2 |
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Solution to my misfire problem was a crimped wire to # 1 Injector
Congrats,
Glad you found it
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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05-27-2011
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#3 |
  
Join Date: May 2007
Location: Peoria, AZ
Posts: 9,155
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Re: Solution to my misfire problem was a crimped wire to # 1 Injector
Great find. Id be happy with myself and a beer should be involved as a reward.
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GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director  91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V |
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05-27-2011
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#4 |
 
Join Date: Feb 2010
Location: Pendleton, IN
Posts: 3,904
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Re: Solution to my misfire problem was a crimped wire to # 1 Injector
Congrats on finding the problem. I really enjoy reading these threads. Trying to be a sponge and soak up all this first hand knowledge.
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1988 KOH Prototype EX5023 sold 1990 ZR-1 #444 Convertible 1990 ZR-1 Black #966 1991 ZR-1 Quazar Blue #296 1957 Duntov SS Project |
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05-27-2011
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#5 |
Join Date: Feb 2009
Location: Alexandria, Virginia
Posts: 1,467
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Re: Solution to my misfire problem was a crimped wire to # 1 Injector
Great new Jim!!! If anyone could run this one down it was you. I was wondering if it was something more serious after I saw you post on the WTB a fuel regulator.
Rich
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1990 Bright Red Coupe #608 380 Stroker, Ported Heads/Intake/Housings/TB Haibeck Secondary Delete Chip / Pete's Cams George Braml Intake / FIC Injectors Coated SW Headers / Corsa Bill Boudreau B/B ZF6 / Viper 4.10 gears Ron Davis Radiator Pioneer AVIC-Z140BH NAV Fikse FM5's 285 / 335 / C6 Brakes WAZOO Member |
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05-27-2011
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#6 |
 
Join Date: Jun 2004
Location: Texas
Posts: 2,431
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Re: Solution to my misfire problem was a crimped wire to # 1 Injector
Great job finding the issue
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95 ZR-1 BLK/Gry #392 LT5 Reg# 868 *RIP* ZR1NET Founding Mem #155 |
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05-28-2011
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#7 |
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Join Date: Mar 2009
Location: Orlando, FL
Posts: 1,828
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Re: Solution to my misfire problem was a crimped wire to # 1 Injector
Good job!
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2004 Z06/Z16 LeMans Commemorative Edition 1991 ZR-1 #302 White/Gray (sold) 1991 ZR-1 #1147 Red/Saddle (sold) |
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05-28-2011
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#8 |
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Join Date: Oct 2010
Location: Sedalia, MO
Posts: 150
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Re: Solution to my misfire problem was a crimped wire to # 1 Injector
Persistence pays off! Way to go Jim. Your repair job looks top notch!
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Fun 91 #303 |
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05-28-2011
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#9 |
 
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Solution to my misfire problem was a crimped wire to # 1 Injector
Hats off to ya! That problem rises above "the norm", far as troubleshooting goes! Now get ready for some permagrin!
Jim, are any of your other Zs modded, or is this your first P&P (or whatever)? Boy, I remember my first outing after I P&P'ed my top end. It was a totally different, TOTALLY different animal!! And, just for some icing on the cake, I was on my way home from that first test drive when a red Pontiac (LT1 Firehawk?) with a couple a young "hotties" came up on my tail. I was doing about 60 when they pulled out and passed me, hesitating along side long enough to smile and wave before nailing it and completing their "pass". I don't know who they thought I was, or maybe didn't care(?), and if it had been some young guy(s) instead, I probably would have ignored them, as I usually do. But! A couple hotties in their 20s? That never happens (to me) - more that once or twice a day, anyway   They were definitely teasing, and I was suddenly transformed to a teenager in the Corvette I could never afford when I was a teen - game on! We played "leap frog" a couple times before I turned the LT5 loose to cap it all off. Man, whata rush!! But, to be honest, I don't know if it was the "new" LT5 or the flattery of a couple gals wanting to play with this ol phardt and his Vette. Doesn't matter. I put it in the "good times in the Z" memory file, and always grin when I replay it in my mind!  Good hunting, Jim!P.
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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05-28-2011
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#10 |
Join Date: Mar 2004
Location: Found Member
Posts: 4,346
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Re: Solution to my misfire problem was a crimped wire to # 1 Injector
 Good "find" Jim !
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Frank Urbo. NCM Lifetime member # 982 Registry Founding # 237 |
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