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2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

Tune up to tune down

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Old Jun 2, 2026 | 06:23 PM
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OleRed3824's Avatar
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Default Tune up to tune down

Changing spark plugs and before I removed the last one I accidentally spilt coolant down the hole of cylinder 8. Before removing the plug I blew it out with the other cylinders covered and spray wd-40 down the hole and moved ahead. Let it set for about 15-20 minutes then removed the plug. Took it down the road and it’s shaking and sounding like crap. Am I screwed? How do I fix the issue?
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Old Jun 2, 2026 | 09:02 PM
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We have zero idea what your working on...
wd40 is a lubricant not good in the sparkplug well.
Use brake cleaner & compressed air to dry the coil boot & sparkplugwell.

If it as bad as you say it is, misfire code should come up in no time.
figure out wch one you screwed up & fix it.
check your sparkplug gap.....

If it started, its not hydrolocked & chances are you didnt internally hurt the engine.
If there was alot of coolant in there, she would have locked up.
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Old Jun 2, 2026 | 09:51 PM
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Default 04 f150 5.4

Cleaned everything up. Oil looks and smells good. The clip on the ignition coil was broke. Gotta replace it and should be good
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