1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Upper (Trailing) spark plugs aren't sparking

Thread Tools
 
Search this Thread
 
Old Jul 25, 2010 | 07:27 PM
  #1  
79RX7IA's Avatar
Thread Starter
Junior Member
 
Joined: Apr 2010
Posts: 25
Likes: 0
From: iowa
Upper (Trailing) spark plugs aren't sparking

Both upper spark plugs on both rotors are wet when pulled. Both Bottom plugs are dry.

Plugs and wires are pretty new.. less than 8,000 miles on them. If I disconnect the trailing wire from the coil, the coil sparks like crazy.

Bad distributor?
Reply
Old Jul 25, 2010 | 07:38 PM
  #2  
Jeezus's Avatar
Stu-Tron Get Yo Groove On
Tenured Member: 15 Years
iTrader: (5)
 
Joined: Nov 2006
Posts: 8,482
Likes: 31
From: Huntsville AL
Pull a trailing plug and lay it on the fender, crank it and see if it sparks.

If the coil is zappin, then it knows when to fire, ie dizzy is still good.
Reply
Old Jul 25, 2010 | 09:21 PM
  #3  
trochoid's Avatar
Old Fart Young at Heart
Tenured Member 10 Years
iTrader: (6)
 
Joined: Apr 2004
Posts: 15,145
Likes: 8
From: St Joe MO
Trailings work part time on the 79s. If plugs get too fouled or wet, the spark follows the foul/wet and doesn't jump the gap. Path of least resistance thing. Clean/dry the plugs.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
Jul 1, 2023 04:40 PM
The1Sun
New Member RX-7 Technical
9
Mar 18, 2018 11:08 PM
FC_DREAMS
General Rotary Tech Support
7
Aug 30, 2015 09:12 PM
Joe428
1st Generation Specific (1979-1985)
16
Aug 19, 2015 06:24 PM




All times are GMT -5. The time now is 09:27 PM.