Looking for a one piece model if possible. Best place to buy and which ones?

Coils as well...

 

Motorcraft does not make a 1 piece plug, the latest 2 piece is SP-515.

Other than OEM Motorcraft, the only coils I'd take a chance on are Araparts. DG511. Quite inexpensive.

You sure you need coils? I'd simply replace the boots and springs, those kits are cheap and brand isn't critical.

 

Thanks, glc. I will look at those.

Anyone used Delphi coils? A bit more expensive than Motorcraft on Amazon.

Not sure I need coils, but 146k on the truck and I plan on keeping for quite a long time. At least 5-6 years more at least. Put about 12k on it per year. Got a lot of money in it thus far on other repairs and accessories. Latest is new stereo and speakers. Next is rigid fogs and maybe a light bar in bumper.

 

I second the Araparts....Ive used for a little over a year and they been good

 

There are no better coils than Motorcraft, why would you spend more?

Just get boot and spring kits. Only replace the coils if it develops a miss.

 

I may have a miss. I have that shudder many speak of in overdrive under light load/throttle and its getting more profound each day. Troubleshooting for water now, and have two more coils to pull tomorrow. Took and decent splash on pass side in some heavy rain. Big hidden puddle in town.

No codes. After cleaning them up, including dielectric, is there a way to test them individually? Mechanic says GM computer will give you a spark/misfire report per cylinder where Ford does not.

I found boots WR-6131 on amazon but it doesn't state if spring is included.

 

WR6131 does not come with springs.

You can buy Standard CPBK240 from rockauto.com for $21.79 a set. That's boots and springs.

Change the plugs, boots, and springs and see how it runs. If it still misses, buy a set of the Araparts cops and save the old ones with the new boots and springs.

 

Excellent. Thanks again!

 

Cleaned up all cops and plug holes with brake cleaner and blew it all down with air compressor. Fresh dielectric too. No sign of water but down miss is gone.

67 k on current plugs, so will do those sooner than later just because and a boot kit.

Side note : anyone use MSD cop?. Rock auto has those as well.

 

MSD coils are hit and miss. I would not buy them.

 

Again - there are no better cops than Motorcraft, and I would not pay the same or close to it for any other brand. The only cheap cops I'd buy are the Araparts.

 

10-4. Loud and clear. Thanks all

 

Doesn't Champion make a once piece spark plug for these motors? I thought they were supposed to be better than the Motorcraft?

 

Yes, Champion and E3 make 1 piece plugs. Results have been decidedly mixed. The SP-515's are fine if they are installed correctly.

 

For $80 I went with the Araparts coils rather than 20-30 for new boots/springs. May as well, as the labor charge at my shop is the same either way. $350 which includes an upper cylinder carbon clean, similar to MotorVac. They have the lisle tool on standby.