Bosch +4's causing power loss¿
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Member
Joined: Dec 2000
Posts: 146
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From: Arlington, Tx
Bosch +4's causing power loss¿
This past weekend i did i routine oil change and swapped my regular Bosch Platinums for some Platinum +4's($6 apiece, kinda pricey), noticeable power gain in acceleration, anyways my problem is ever since i changed the plugs my car kinda lags and hesitates when i hold it at 1500-2000 RPM's(cruising RPM range) i dont know how the plugs could be causing it, i put all the plug wires back on right and double checked, does anybody know what could be cuasing this(TomP, Ovrclk...?) It gets kinda embarrassing when your cruisin with your girlfriend or your friends and your car starts buckin.
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91 Blue RS with ASCD SS hood w/hood pins, Flowmaster 80 series w/3 inch dual exhaust, K&N, Hypertech Power Chip, Bosch Platinum wires and plugs.(19 years old and all this bought and paid for by myself, except the car that was paid for by State Farm...long story with the minor fender benders and them not wanting to pay for repairs...mwahaha)
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91 Blue RS with ASCD SS hood w/hood pins, Flowmaster 80 series w/3 inch dual exhaust, K&N, Hypertech Power Chip, Bosch Platinum wires and plugs.(19 years old and all this bought and paid for by myself, except the car that was paid for by State Farm...long story with the minor fender benders and them not wanting to pay for repairs...mwahaha)
Banned
Joined: Jul 2000
Posts: 1,157
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From: Columbus,OH
bad plug or one that has a very high resistance compared to the others which will cause arcing to happen in the cap when it is to fire that cylinder because electric behaves like other things, it will take the path of least resistance that will complete a circut(positive to a ground). Or you migh have a cracked one from rough shipping and such. I would take the plugs out one by one and inspect them if no noticible problems replace with a $.99 champion plug and got through each cylinder and see which plug is bad.
Or you migh have th worng gap on them.
These are just my ideas, don't take them as the gospel
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FOR SALE!!!!!!!!!!!!!!!
86 Trans Am 355 TPI Rebuilt 700R4 with Corvette servo, modified valve body, and a B&M Torque Converter (2000 rpm stall w/ lock up), 87 350 block bored .30 with new crank. Reworked 305 heads with 3-angle valve job. Added in the rebuild was an SLP TPI cam, BBK 58mm Throttle Body,MSD 6A, Hypertech Power Coil,MSD Wires, 1.5 Crane roller tipped rocker arms, SLP Intake Runners and Port matching in upper intake including fully ported plenum, TPIS adjustable fuel pressure regulator @ 46psi, Hooker shorty style headers w/ Thermotech heat wrapping, Custom 3” exhaust with Flowmaster muffler and chrome quad tips, Hypertech Thermomaster Computer chip, K&N open element cone filter on modified MAF per TPIS specs, removal of A/C hardware and added a 1LE firewall cover installed. Also there has been a PST front suspension kit with Hotchkis strut tower brace added.
Stereo has 2 Clairion Pro Audio dash plates, 2 Sony 6X9s, 2 Kicker 12's in a custom Carpeted box with a custom amp rack Holding 3 MTX 280 Amps, and a MTX electronic Crossover all wired with EFX cable.
Asking $4200 with all extra Parts that are needed to fix most apearance flaws. ie Complete hatch and wing from a 91 GTA
http://geocities.com/feltsb/kyle.html
Kills:
95 Talon TSI, 96 Probe GT, 91 T/A L98, 89 RS, 86 Mustang GT, 88 Mustang LX 5.0, 92 Thunderbird V8. couple or ricers that I think were Civics or Preludes not sure what year, 95 Celica GT-S, 94 Chevy 1/2 ton 350, one of those NASCAR F150's
89 Trans Am Turbo 3.8L All stock 43,000 miles #1053 of 1555
Or you migh have th worng gap on them.
These are just my ideas, don't take them as the gospel
------------------
FOR SALE!!!!!!!!!!!!!!!
86 Trans Am 355 TPI Rebuilt 700R4 with Corvette servo, modified valve body, and a B&M Torque Converter (2000 rpm stall w/ lock up), 87 350 block bored .30 with new crank. Reworked 305 heads with 3-angle valve job. Added in the rebuild was an SLP TPI cam, BBK 58mm Throttle Body,MSD 6A, Hypertech Power Coil,MSD Wires, 1.5 Crane roller tipped rocker arms, SLP Intake Runners and Port matching in upper intake including fully ported plenum, TPIS adjustable fuel pressure regulator @ 46psi, Hooker shorty style headers w/ Thermotech heat wrapping, Custom 3” exhaust with Flowmaster muffler and chrome quad tips, Hypertech Thermomaster Computer chip, K&N open element cone filter on modified MAF per TPIS specs, removal of A/C hardware and added a 1LE firewall cover installed. Also there has been a PST front suspension kit with Hotchkis strut tower brace added.
Stereo has 2 Clairion Pro Audio dash plates, 2 Sony 6X9s, 2 Kicker 12's in a custom Carpeted box with a custom amp rack Holding 3 MTX 280 Amps, and a MTX electronic Crossover all wired with EFX cable.
Asking $4200 with all extra Parts that are needed to fix most apearance flaws. ie Complete hatch and wing from a 91 GTA
http://geocities.com/feltsb/kyle.html
Kills:
95 Talon TSI, 96 Probe GT, 91 T/A L98, 89 RS, 86 Mustang GT, 88 Mustang LX 5.0, 92 Thunderbird V8. couple or ricers that I think were Civics or Preludes not sure what year, 95 Celica GT-S, 94 Chevy 1/2 ton 350, one of those NASCAR F150's
89 Trans Am Turbo 3.8L All stock 43,000 miles #1053 of 1555
Member
Joined: Jan 2000
Posts: 276
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From: Lee's Summit, MO
HAHAHA Bosch +4's - Plugs are like fishing lures, designed to attract the customer, not accomplish their goal better.
ANYWAY, did you make sure to gap your plugs before you put them in? The quality control at plug plants are not good (once got a plug without threads!). You might have got a plug with a cracked insulator. There can be a number of things.
Vman
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1969 Camaro Sport Coupe
383, 700R4, leather, everything black but the lights
Previous owner of an 89 RS Camaro
2.8L V6, 700R4
ANYWAY, did you make sure to gap your plugs before you put them in? The quality control at plug plants are not good (once got a plug without threads!). You might have got a plug with a cracked insulator. There can be a number of things.
Vman
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1969 Camaro Sport Coupe
383, 700R4, leather, everything black but the lights
Previous owner of an 89 RS Camaro
2.8L V6, 700R4
Supreme Member
Joined: Jan 2001
Posts: 7,604
Likes: 1
From: ****SoCal, USA****
Your problem is hard to find.
I can only suggest to pull a plug wire at a time. But, you're saying that it happens at certain speeds, rpm.
Open the hood at night time, no lights.
If you see lightening storm, you found problem. Your plug wires are arching.
I've kinda sworn off fancy plugs, now. No reallimprovement for the investment.
Higher output ignition systems are worth the effort, tho.
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Chat Soon,
KED85
Karl
1985 Firebird 2.8 to 3.4 swap project for Smog Happy LA, CA
I can only suggest to pull a plug wire at a time. But, you're saying that it happens at certain speeds, rpm.
Open the hood at night time, no lights.
If you see lightening storm, you found problem. Your plug wires are arching.
I've kinda sworn off fancy plugs, now. No reallimprovement for the investment.
Higher output ignition systems are worth the effort, tho.
------------------
Chat Soon,
KED85
Karl
1985 Firebird 2.8 to 3.4 swap project for Smog Happy LA, CA
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