Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > 911 / 930 Turbo & Super Charging Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Jul 2010
Location: New Jersey
Posts: 5,201
Garage
possible bad spark plugs?

what should the gap be? i went by what was in the manual, but i am not sure that is correct with aftermarket plugs

Old 10-07-2010, 10:50 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #21 (permalink)
Registered User
 
Join Date: Jul 2010
Location: New Jersey
Posts: 5,201
Garage
ok, i just read one of the tech articles on there about spark plugs,..it said NOT to use anti seize in fear of the plug backing out a bit or not getting a good groud

,.. i have always been told TO USE a little anti seize and i did when putting in the new spark plugs,..anyone think these has something to do with it?
Old 10-07-2010, 04:19 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #22 (permalink)
Registered User
 
Join Date: Aug 2004
Location: Maryland
Posts: 772
Garage
It is possible, but I doubt it. It is also possible you have a cracked plug insulator...or other short to ground...
__________________
Emery

1988 930 coupe - Silver Metallic
3.3L w/GT35R, B&B Headers, RarlyL8 muffler, TurboKraft IC, Tial WG, tecGT based phased sequential EFI & ignition, Wevo shifter/coupler, ...
Old 10-07-2010, 04:42 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #23 (permalink)
OFF THE BOOST PIPE NOW...
 
A930Rocket's Avatar
 
Join Date: Oct 2003
Location: Mount Pleasant, South Carolina
Posts: 8,118
I never use anti-seize on the plugs. Might want to pull and clean them (and the heads some how).

You can try to back track with your other old parts as well. Try your old cap, rotor, plugs, etc. one at a time to see if it makes a difference.
Old 10-07-2010, 05:08 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #24 (permalink)
Registered User
 
Join Date: Jul 2010
Location: New Jersey
Posts: 5,201
Garage
ok, back tracked a bit, and maybe found something,..not sure,..

replaced rotor and cap, and put the old one back on,..SAME!

so i put the new cap and rotor back on...

decided to pull the intercooler again today and pull all the plugs

cyl 1 - clean as a whistle, doesnt look like it fired
cyl 2 - clean as a whistle, doesnt look like it fired
both stink like fuel
cyl 3 - some black carbon
cyl 4 - some black carbon
cyl 5 - some black carbon
cyl 6 - some black carbon

does this mean, cyl 1-2 are NOT firing? and 3-4-5-6 are?
OR
does this mean, cyl 3-4-5-6 are NOT firing? and 1-2 are?

all spark plugs stink like fuel!, i did clean all the threads off and tips, then reinstall

would this be a coil problem? i have the red light on in the oil pressure gauge (alternator light, when the car is running)

idle is at about 500-600 and oil pressure is good 2k-3k on start up
Old 10-08-2010, 04:23 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #25 (permalink)
Registered User
 
rsrfan's Avatar
 
Join Date: Jun 2004
Location: Siesta Key, Florida
Posts: 1,237
Sounds like 1&2 not firing. Is it possible you crossed these two wires?
Old 10-08-2010, 05:03 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #26 (permalink)
OFF THE BOOST PIPE NOW...
 
A930Rocket's Avatar
 
Join Date: Oct 2003
Location: Mount Pleasant, South Carolina
Posts: 8,118
Crossed or maybe broken plug insulators?
Old 10-08-2010, 05:07 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #27 (permalink)
Registered User
 
Join Date: Jul 2010
Location: New Jersey
Posts: 5,201
Garage
Quote:
Originally Posted by A930Rocket View Post
Crossed or maybe broken plug insulators?
i just borrowed a plug tester thingy from a friend, pretty cool little tool, i am going to test the plugs on another car with this tomorrow...

is it safe to rule out a coil? why would alternator light be coming on? from engine running so weak?
Old 10-08-2010, 05:57 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #28 (permalink)
Registered User
 
Join Date: Mar 2000
Location: Auburn,In. U.S.A.
Posts: 2,449
Jim,

You need to start over by pulling the cap with wires, pull the rotor off :

NOW:
1. Turn the crank clockwise to #1 TDC on the compression stroke put the rotor back in place. Is the rotor pointing to #1? it should be just before #1 or nearly on #1.

2. Check the rotor for correct part number if it's new. If you used the old rotor clean all the copper and check it for continuity tip to tip. ( if it' is a rev limiting rotor it could have opend up or partially opened up). Look for cracked or burned spots If all checks out make sure it's seating properly and it points to #1.

3. Check the cap for correct part number if it's new. If you used the old cap clean all the copper and check it for continuity tip to plug socket. Look for cracked or burned spots.

4. Check each plug wire and the coil wire for continuity end to end.
Plug the wires into the cap and make sure they are seated completely. Do the same for the coil. Check continuity between the inner cap contact and the plug wire socket, do the same for the coil wire.

5. Pull and clean all the plugs, tighten the screw on caps and install the plugs on to the wires making sure each is seated completely. With the rotor and cap reinstalled ground the plugs one at a time ground the plugs one at a time and check them for a strong spark.
A little WD40 on the plug porcelin will help seat the plugs in the boots.

If everything thing checks out individually and accumlative THEN AND ONLY THEN PROCEED TO FUEL.

If stll no spark on all 6 check the distributer green signal wire and the engine harness to CDI connections. If no go swap out the CDI and or the coil.

Don't mean to get so fundamental but I have been in fire fights and, beleive me, you will shoot at anything and everything.

Cole
__________________
Cole - 80 930 "The Old Sled"
Mods: TurboKraft Custom IC, 934 Headers, GSX 61, Zork, Port Work, SC Cams, Air Mod Fuel Dist Relocated, Water Meth Injection, BL WUR, MSD 6530, Greddy EBC, Synapse Bov, Short 2nd & 3rd with 8:37 R&P, Wevo Shifter, Coupling, and Mounts, MTX-L SSI-4, Big Brakes, Rebel Coilovers, Bilstein Sports.

Last edited by cole930; 10-08-2010 at 06:27 PM..
Old 10-08-2010, 06:24 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #29 (permalink)
Registered User
 
Join Date: Jul 2010
Location: New Jersey
Posts: 5,201
Garage
ok, checked cap and rotor this morning for part numbers with the original,..they are the same

i checked plug wires, each one seperatly with extra grounded plug in each end,..all have great spark

i guess the next step is to pull each plug and check those
Old 10-09-2010, 06:57 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #30 (permalink)
Registered User
 
Join Date: Mar 2000
Location: Auburn,In. U.S.A.
Posts: 2,449
Jim,

Did you bring the #1 piston to TDC on the compression stroke and then see where the rotor was pointing ? Did you check plug gap?

I don't mean to keep harping on this but your initial issue really sounds like timing. You did say the car ran fine before you changed things out.

Cole
__________________
Cole - 80 930 "The Old Sled"
Mods: TurboKraft Custom IC, 934 Headers, GSX 61, Zork, Port Work, SC Cams, Air Mod Fuel Dist Relocated, Water Meth Injection, BL WUR, MSD 6530, Greddy EBC, Synapse Bov, Short 2nd & 3rd with 8:37 R&P, Wevo Shifter, Coupling, and Mounts, MTX-L SSI-4, Big Brakes, Rebel Coilovers, Bilstein Sports.
Old 10-09-2010, 07:42 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #31 (permalink)
Registered User
 
Join Date: Jul 2010
Location: New Jersey
Posts: 5,201
Garage
no not yet, that is tomorrow mornings project, just a stupid quick question

is the firing order clock wise or counter clock wise?
Old 10-09-2010, 12:25 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #32 (permalink)
beancounter
 
jwasbury's Avatar
 
Join Date: Jan 2008
Location: Weehawken, NJ
Posts: 3,612
I expect yours should be counterclockwise...normally there is a sticker that will show this. I sent you a PM with my phone number. Give me a call if you want to chat...I'm around at the moment.
__________________
Jacob
Current: 1983 911 GT4 Race Car / 1999 Spec Miata / 2000 MB SL500 / 1998 MB E300TD / 1998 BMW R1100RT / 2016 KTM Duke 690
Past: 2009 997 Turbo Cab / 1979 930
Old 10-09-2010, 12:32 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #33 (permalink)
Registered User
 
Join Date: Mar 2000
Location: Auburn,In. U.S.A.
Posts: 2,449
Jim,

Definatly counter clockwise !!!!!!!!!

SORRY !!!!! my bad !!!!! I posted a SC firing order diagram. Thanks Jacob at first I thought you were talking about one of the photographs.

Cole
__________________
Cole - 80 930 "The Old Sled"
Mods: TurboKraft Custom IC, 934 Headers, GSX 61, Zork, Port Work, SC Cams, Air Mod Fuel Dist Relocated, Water Meth Injection, BL WUR, MSD 6530, Greddy EBC, Synapse Bov, Short 2nd & 3rd with 8:37 R&P, Wevo Shifter, Coupling, and Mounts, MTX-L SSI-4, Big Brakes, Rebel Coilovers, Bilstein Sports.

Last edited by cole930; 10-09-2010 at 08:01 PM..
Old 10-09-2010, 12:59 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #34 (permalink)
Registered User
 
Join Date: Jul 2006
Location: S. Florida
Posts: 7,289
and the #1 spark plug wire is about 4 or 5 o clock on the distributor cap when looking at it in car.
Old 10-09-2010, 01:06 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #35 (permalink)
Registered User
 
Join Date: Jul 2010
Location: New Jersey
Posts: 5,201
Garage
ok, that is the order i have, can i move the #1 wire over one,..right now it is to the right of the clip...

this is how i have it right now


should i try this way
Old 10-09-2010, 01:17 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #36 (permalink)
Registered User
 
Join Date: Jul 2010
Location: New Jersey
Posts: 5,201
Garage
that is not my car by the way, just using the picture
Old 10-09-2010, 01:22 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #37 (permalink)
Registered User
 
Join Date: Jul 2006
Location: S. Florida
Posts: 7,289
no, that is not how you do it.

remove the dist cap and there is a notch in the aluminum distributor casting right under where the cap mounts.
the rotor should be pointing at that notch when the #1 cylinder is TDC.

then put the cap on and see which plug wire is above that notch.

on a late 80's 930 that is timed stock, that is usallyaround 4 to 5 o clock.
Old 10-09-2010, 01:29 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #38 (permalink)
 
Registered User
 
fastfredracing's Avatar
 
Join Date: Jul 2003
Location: Valencia Pa.
Posts: 6,374
I just did a 930 yesterday, and #1 is as you have shown in your second photo, looks like you missed each wire by one pole. Move them all one spot counterclockwise, and I bet it fires.
#1 was one pole counterclockwise of the cap holddown on the one I just did.
Good luck!
__________________
1976 930( peru red usa) ,1980 euro sc, 1974 914. 1997 M3, , 2004 Duramax 3500 quad cab dually . 2004 2500 HD Gas 1989 Yamaha xt 350. 2004 Turbo Pepperwagon, 1976 Chevrolet C 60 Rollback towtruck. 2006 x3 a few old tractors, and tons of tools
Old 10-09-2010, 04:16 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #39 (permalink)
OFF THE BOOST PIPE NOW...
 
A930Rocket's Avatar
 
Join Date: Oct 2003
Location: Mount Pleasant, South Carolina
Posts: 8,118
Maybe it's the way the dizzy was dropped in. My #1 is where Jim has it in the first picture.



Old 10-09-2010, 04:58 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #40 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 11:47 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2020 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.