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Thread: Raptor 400 Spark Plug Tune-up
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09-19-2021, 09:20 AM #31
Anybody else find different plugs in your engine when you replaced them? My top plugs were a CYFS-12-NPG and the bottom plugs were a CYFS-12-F. I replaced them all with the manual specified SP-526 (CYFS-12-FP).
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2018 Moomba Craz
6.2L Raptor 400
6 Pump Ballast, Autowake 2.0, Flow 2.0 Surf System
OJ 15x13 Wake Prop
Digital Cruise Pro 3 (paddle wheel)
Wetsounds Rev 10's
2005 Supra Launch 22SSV - Sold
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09-19-2021, 09:37 AM #32
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09-19-2021, 09:51 AM #33
I jumped on a raptor truck forum and the mixing of upper and lower plugs seems common from Ford.
No reason behind it, not sure the difference from the f and npg, but if Ford does it from the factory it’s fine.
Sent from my iPhone using Tapatalk2021 Supra SA 400
2018 Supra SA 400 (SOLD)
Michigan
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09-19-2021, 09:55 AM #34
It has always ran great. Just seems odd that if they came with two different plugs that you wouldn’t replace with two different plugs.
russellsmojo….I didn’t replace the plug wires. I figured I may do that at 600 hrs.
Sent from my iPhone using Tapatalk
2018 Moomba Craz
6.2L Raptor 400
6 Pump Ballast, Autowake 2.0, Flow 2.0 Surf System
OJ 15x13 Wake Prop
Digital Cruise Pro 3 (paddle wheel)
Wetsounds Rev 10's
2005 Supra Launch 22SSV - Sold
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09-19-2021, 09:59 AM #35
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09-20-2021, 11:03 AM #36Senior Member
- Join Date
- Jan 2018
- Location
- Lexington, KY
- Posts
- 369
Yep, I found this too. Replaced all 16 with SP-526 (CYFS-12-FP) and put 100 hours on it this season. I did notice an improvement in idle when I made the change.
I also kicked and cussed and and contorted my way in to change the fuel filter @ 300 hours. Not worth it. I cut the used filter apart and it barely does any filtering. Unless you suspect it's clogged, it's not worth the effort to change it - which requires loosening the starboard (drivers) side Cat and risking the V-band exhaust gasket.2018 Moomba Craz | Autowake 2.0, Zero-Off, G6 Pumps | Captain Blue/Dark Graphite/Silver Flake | Enzos + Lead
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09-20-2021, 11:18 AM #37
2018 Moomba Craz
6.2L Raptor 400
6 Pump Ballast, Autowake 2.0, Flow 2.0 Surf System
OJ 15x13 Wake Prop
Digital Cruise Pro 3 (paddle wheel)
Wetsounds Rev 10's
2005 Supra Launch 22SSV - Sold
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09-21-2021, 08:56 PM #38
Mine had different plugs top and bottom too. I’ve seen many have had this.
Fuel filter wasn’t too bad if you take the quick disconnect off on the top and down by the fuel pump and then snake it out. Definitely no loosening of cats or whatever else was described. By snaking it out it only was a one beer job. Interesting to hear about cutting it and it not being much of a filter.2016 Mojo surf edition
1100lbs rear w/ 475lbs piggyback mid/ center 700lbs/ 500lbs IBS/ 600 lbs lead
ACME 2315
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10-04-2021, 02:05 PM #39
Doing this job in 2 weeks as part of my year-end service and winterization.
Any reason to upgrade to Iridium over the 2x platinum from Motorcraft?
I can get both locally and price for NGK Iridium is $1 more. Worth it?2015 Moomba Mojo Surf Edition
4,000lbs
Manual Flow
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10-04-2021, 02:29 PM #40