backfiring after engine shampoo?

[kmj 4g63t]

Hey guys, I cleaned my engine bay today and covered all loose wiring and have the valve cover over the spark plug wires. I washed everything dried it and waited about 2 hours before turning it on, once I did it started to smoke and it backfired.

I turned the car off took the wires off, checked each one and dried them properly and checked around for anything wet and dried it. After doing so I turned the car back on with no smoke coming from the headers, it now idled fine but after 5 minutes it backfired(I do have a full straight pipe with no muffler). That hasn't been a problem as of yet. Is this backfiring happening because my spark plug wires are still wet or is my engine not running on all cylinders.

I checked around the forum and no other person had this trouble after an engine shampoo. I don't want to drive my car until I find out whats up with it.

Thanks a lot guys!

 

[#40Fan]

I have seen this with other cars. The throttle position sensor holds moisture like a SOB. Unplug it and take it for a drive. It will kick on the CEL but it will still run. See if it stops your problem.

 

[kmj 4g63t]

Fixed the issue and figured out why my car was sputtering. It's the Maf and it was caused by my old filter that was disgustingly dirty. 2 Mafs in 4 months caused by the same dirty filter.

Buying a new maf and I have a new filter(problem solved).