Check your engine ground wires

Engines, Transmissions & Final Drive questions and answers

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theo
Driver
Posts: 48
Joined: Tue Feb 07, 2017 7:56 pm
Vehicle: NA8
Location: Brisbane

Check your engine ground wires

Postby theo » Sun Sep 10, 2017 8:25 am

Something weird happening to your MX5? Intermittent miss fire? Hunting idle? Just doesn't seem to run smoothly?

Check your engine ground wires.

It might just be loose or dirty or damaged. I just replaced the earth strap at the rear of the engine, cleaned the contacts on the connector above the alternator and added an extra earth strap between the inlet manifold and the chassis.

My idle is now sooooo much better. Settles much faster. No more hunting up and down.

Might seem obvious, but its so easy to check first. If it helps someone I'm happy.
1993 NA8 Clubman in Silver. My build thread
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LiteIsRite
Fast Driver
Posts: 424
Joined: Mon Apr 08, 2013 8:16 pm
Vehicle: NA6
Location: Northern Rivers NSW

Re: Check your engine ground wires

Postby LiteIsRite » Sun Sep 10, 2017 7:27 pm

Thanks, theo, for sharing your experience. I've read on this forum, and elsewhere, about the importance of having clean grounds on our cars. I don't have any serious issues with mine, AFAIK, but it certainly won't hurt to take a look.
”How you get there is the worthier part.” - Shepherd Book, Firefly
"Cherry" - Classic Red 1990 NA6 :NA6: [sold]
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LiteIsRite
Fast Driver
Posts: 424
Joined: Mon Apr 08, 2013 8:16 pm
Vehicle: NA6
Location: Northern Rivers NSW

Re: Check your engine ground wires

Postby LiteIsRite » Sat Sep 23, 2017 2:08 pm

theo wrote:Something weird happening to your MX5? Intermittent miss fire? Hunting idle? Just doesn't seem to run smoothly?

Check your engine ground wires.

Might seem obvious, but its so easy to check first. If it helps someone I'm happy.

Got around to cleaning my grounds this morning. I really wasn't expecting any difference, but you were right - the engine is definitely running smoother than before :D

Thanks, and be happy!
”How you get there is the worthier part.” - Shepherd Book, Firefly
"Cherry" - Classic Red 1990 NA6 :NA6: [sold]
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