PT2 GMC terrain misfire, THE FIX

pt 1
• engine misfire, let's ...

[@maloosecat123]

Hi Parts Shooter...Excellent video! I have a question? I have a Terrain 2013 (150k miles) it has started clunking and ratteling and it's undrivable now...really would like to fix it myself...there is a cylinder #3 (p0303) misfire...have tried new coils spark plugs...no change...car has a history of severely burining oil with bad piston rings.. any tips? is this the end for this engine? thanks

[@loadedfun4764]

Did the abs module schidt the bed yet?

[@tamikab.5868]

I have the same milky substance coming out of my hose too in my terrain. I changed my intake and exhaust vvt solenoids.

[@divia9930]

had same problems , they need to recalls on this

[@SS-og1hw]

สารทางช้างเผือก?

[@scottkenny4598]

What year is that one 15?

[@nextdoorpowerwashing8340]

Just redid wife’s terrain. Still getting #3 misfire.. new valves and head gasket, new timing chain and guides.

[@partsshooter]

1. Check over your work! 2.Perform a compression test... compare to a neighbor cylinder. 2. Swap coils, swap plugs and swap injectors, see if the misfire move. 3.lease invasive way is to simply diagnose each wire on coil and injector for proper signal, voltage and ground, if compression level is fine on your bad cylinder.

[@nextdoorpowerwashing8340]

@@partsshooter so did a compression test. Reason for the valve job, no compression on number three cylinder. 1,2,4 good compression before valve replacement.. originally just did timing chain, was running rough. So redid to make sure I did it right. Was all good, started right up but shaking. Scanned it and number three misfire. Ran live data and continuous misfire. #3 still getting same shaking and stalling.. just finished putting it all back together this week.. very frustrated… how do I check the coil plug to see if it is actually working m?

[@nextdoorpowerwashing8340]

@@partsshooter all new plugs and coils also

[@partsshooter]

@nextdoorpowerwashing8340 well... let's start at the compression test 1st and go from there. What's the compression currently after repair. Provide that and we can go further

[@nextdoorpowerwashing8340]

@@partsshooter ok I’ll do anther compression test

[@kirbymoody6985]

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