I'm working on my dad's car which had snapped it's timing belt. We got the heads resurfaced and cleaned and installed new springs, valves, seals in the head. All valves were lapped and leak tested. We also got new injectors while we were at it. Now we have everything put back on and the car will start but I'm getting a misfire on cylinder 5. First instinct was to swap the coil pack and spark plug to other cylinders to chase the misfire but this did nothing and the misfire stayed in cylinder 5. I also had the coil pack and spark plug out of the engine but still connected and was able to see a noticable spark between the plug. I then pulled the fuel rail and tested the injector while attached to the rail and it has a good mist. Also the spark plug when pulled is a little wet from uncombusted gas so I don't believe that's an issue. Next I checked compression and cylinder 4&6 are roughly 180psi± while cylinder 5 is 170psi± which is well within the 15% limit. Im out of ideas for where to look next any help would really be appreciated.
Misfiring Cylinder After Top End
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For your safety, I suggest you change it
Change the head?
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Humphryorg joined Sep 2022 but only posted today in 5 different threads with frivolous responses...I think his account was hacked or it is a bot.
TNAccord, you might not get a answer on this site as it is pretty much dead. I suggest you post on other sites to obtain an answer.
However, I am barely an amateur when it comes to helping diagnose issues....but, I wonder if maybe a lobe on the camshaft was damaged when the timing belt broke. Hence, it won't let a valve function normally?
TNAccord, you might not get a answer on this site as it is pretty much dead. I suggest you post on other sites to obtain an answer.
However, I am barely an amateur when it comes to helping diagnose issues....but, I wonder if maybe a lobe on the camshaft was damaged when the timing belt broke. Hence, it won't let a valve function normally?
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