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 Technical BBS > 1- Porsche Technical Forums > 911 / 930 Turbo & Super Charging Forum

Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Aug 2017
Posts: 1
cdi and high rpm miss?

Can a cdi box cause a high rpm miss?
I'm still experiencing a slight high rpm (starts about 5,000) miss. Doesn't happen in 1st & 2nd, but it does in 3rd. The ignition set up is a 12 plug distributor, twin coils and twin cdi boxes. I've replaced the plugs, plug wires, cap & rotor and both coils. The only thing left are the cdi boxes. The a/f ratio is fine.
Old 08-05-2017, 07:50 AM
  Pelican Parts Technical Article Directory    Reply With Quote #1 (permalink)
Registered User
 
Alan L's Avatar
 
Join Date: Apr 2006
Location: New Zealand
Posts: 2,809
Have you matched injector flows? You may have a decent average AFR but still have a lean cylinder or two. At high revs, given what you have replaced, I would be looking there.
Alan
__________________
83 SC, 82 930 (track) - Stock except for RarlyL8 race headers, RarlyL8 Zork, K27-7006, 22/28 T bars, 007 Fuel head, short 3&4 gears, NGK AFR, Greddy EBC (on the slippery slope), Wevo engine mounts, ERP rear camber adjust and mono balls, Tarret front monoball camber adjust, Elgin cams, 38mm ported heads, 964 IC. 380rwhp @ 0.8bar Apart from above, bone stock:-)
Old 08-05-2017, 04:44 PM
  Pelican Parts Technical Article Directory    Reply With Quote #2 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 01:47 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2016 Pelican Parts - 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.