Inspection rejection!
#1
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Inspection rejection!
Well, not yet .... my car was due for inspection in February .... I renewed the registration but didn't get around to going for inspection yet. It won't pass anyhow because of the misfire CEL (2004, OBD-II, for which they plug in here in NJ.)
Megasquirt is temporarily removed because of unrelated problems. So now I'm back on the stock computer. I'm pretty sure (or at least hopeful) that the misfire CEL is caused by having different size injectors than the stock computer expects. Stock injector size is 265; currently I've got 305 in there, because they were readily available (thanks OlderGuy) when I removed the MS and 460s recently. Car idles/drives fine except the CEL thinks otherwise. (I know for fact that there's nothing wrong the coils, plugs, wires, etc.)
I'm getting 250cc injectors later this week (thanks to Paul). Question is, since 250s are also non-stock (albeit not as much as 305s, and in the opposite direction), do you guys think it will still misfire?
Yes, I know to stay out of boost on the 250s.
Megasquirt is temporarily removed because of unrelated problems. So now I'm back on the stock computer. I'm pretty sure (or at least hopeful) that the misfire CEL is caused by having different size injectors than the stock computer expects. Stock injector size is 265; currently I've got 305 in there, because they were readily available (thanks OlderGuy) when I removed the MS and 460s recently. Car idles/drives fine except the CEL thinks otherwise. (I know for fact that there's nothing wrong the coils, plugs, wires, etc.)
I'm getting 250cc injectors later this week (thanks to Paul). Question is, since 250s are also non-stock (albeit not as much as 305s, and in the opposite direction), do you guys think it will still misfire?
Yes, I know to stay out of boost on the 250s.
#3
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I'm open to other ideas. This is only about passing inspection and keeping my car on the road, not performance, etc. .... after it passes I'm going back to MS and 460s ASAP!
Seth @ Dealer Alternative couldn't find anything wrong that's causing a misfire. But he mentioned seeing a similar problem on another MSM. I suppose the only way to know for sure that it's NOT the injector size would be to find a set of stockers, along with stock iridium plugs (ordinary NGKs in there right now).
I desperately want to avoid throwing money at this problem. If I add up the money I've wasted on failed DIY COPS, having Seth work on it, rental cars, etc., I could've had a freaking Hydra instead of the MS.
Seth @ Dealer Alternative couldn't find anything wrong that's causing a misfire. But he mentioned seeing a similar problem on another MSM. I suppose the only way to know for sure that it's NOT the injector size would be to find a set of stockers, along with stock iridium plugs (ordinary NGKs in there right now).
I desperately want to avoid throwing money at this problem. If I add up the money I've wasted on failed DIY COPS, having Seth work on it, rental cars, etc., I could've had a freaking Hydra instead of the MS.
#10
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It feels normal when warmed up and driving. But it's very slow to start when the engine is cold -- slower than when it was new and bone-stock, and slower than when I had the MS installed. Could that be a symptom of something?
#14
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Inspection Completion!!
My car passed OBD-II inspection today!!!
Here in NJ we're allowed to have one thing fail during the OBD-II test. Up until last week I had two things failing (according to my code reader which has a readiness tester inside) -- evap sys and egr sys. I searched around and learned that evap sys is difficult to pass and egy sys should be easier. So I cleaned the EGR valve and decreased my spark plug gap to .025 because there were also alleged random misfires. That was a few days ago. Plugged in the reader this morning to see if the ECU self-test was complete. Oddly, it said that it finished evap sys but not egr sys! Whatever; now I only had one thing failing so I went directly to the inspection shop before the car changed its mind and the CEL returned! Passed with flying colors, and that was still on the bigger injectors; I was too lazy to go back to stock 265cc (for you NA owners: it's a real hassle on an NB).
Now I can have two more years of modified goodness. Go-fast parts, MS, even bigger injectors, etc. are going back in my car ASAP.
At least now I know HOW to pass inspection next time.
Here in NJ we're allowed to have one thing fail during the OBD-II test. Up until last week I had two things failing (according to my code reader which has a readiness tester inside) -- evap sys and egr sys. I searched around and learned that evap sys is difficult to pass and egy sys should be easier. So I cleaned the EGR valve and decreased my spark plug gap to .025 because there were also alleged random misfires. That was a few days ago. Plugged in the reader this morning to see if the ECU self-test was complete. Oddly, it said that it finished evap sys but not egr sys! Whatever; now I only had one thing failing so I went directly to the inspection shop before the car changed its mind and the CEL returned! Passed with flying colors, and that was still on the bigger injectors; I was too lazy to go back to stock 265cc (for you NA owners: it's a real hassle on an NB).
Now I can have two more years of modified goodness. Go-fast parts, MS, even bigger injectors, etc. are going back in my car ASAP.
At least now I know HOW to pass inspection next time.