Q: Arcing from distributor to valve cover

asked by on

Ok I'm sick of buying new parts nothing seems to fix a slight miss on my 22re at night I see arc happening from base of distributor to valve cover and if I touch the plug wires it arcs to my hand??? Everything is new cap rotor plugs wires ??? No visible cracks in coil or igniter they are not new but switched out it still is arcing from distributor to valve cover also my pick up in distributor is new as well

My car has 110000 miles.
My car has a manual transmission.

The coil is the only thing that is putting out high voltage. The ignition spark will always look for the quickest path to ground. This is the way electricity works. If you are getting spark jumping to the ground before it wants to jump across the gap of a spark plug, then you will have to look at two things.

First, remove the spark plug wires and inspect them to make sure there is no oil on them from a valve cover leak. Then remove the plugs and make sure the plug gap is set to .031 inches or .80mm. If the gap is too big, this will cause the problem you have. If the plug gap is correct, then make sure they are the correct plug for your engine. They should be NGK BKR5EY or equal plugs.

If the plugs are correct and the gap is okay, and you still have the issue, then you need to have the injection system checked to see if it is running too lean perhaps due to clogged injectors or vacuum leaks. I would also recommend putting dielectric lube at all plug wire connections and on the coil and rotor buttons. This will keep a better contact and less stray arching. Look for any signs of the coil cracked as it will show as a grey or black marks on the coil surface.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Arcing from distributor to valve cover

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Steering wheel shakes at highway speed

If you have a bent rim then you may also have a tire balance and front end alignment issue. Have the tire and rim put on a balancer to check for a bent rim and any balance or tire issues....

Q: I put a penny in place of a fuse, tried to start my car and now it wont start and makes a grinding sound when i try to start it

Hi there. Putting a penny in place of a fuse, not recommended, replace with the correct fuse. The fuse is there, to protect the circuit. If the fuse blows, there is a short to ground. The grinding sound, when you...

Q: 1990 Toyota pick up 22re I just got it in time okay soon as you touch the gas feet it dies ever time so I gave up and its set for

This is typical of a bad idle air control valve. An idle air control valve allows the engine to idle properly by allowing the proper mixture of air and fuel at idle speed. This can also happen when there is...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...