Quote:
Have you seen the amount of fuel that is dumped out of the injectors in cold flood mode?
Nope. 
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| backfire? http://4g61t.org/forum/viewtopic.php?f=6&t=15883 |
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| Author: | waxie1 [ Sun Nov 20, 2005 6:05 am ] |
| Post subject: | backfire? |
This arvo I cranked the car over over and it didn't start. Did a check and then realised i hadn't plugged the coil pack in. Went to start again and after two hard cranks she backfired on me. A little worried! Checked my timing marks and all okay, my cam sprockets are 12oclock (dowels), 3oclock (exhaust) and 9oclock (intake) respectively, but i'm now doubting myself. So How many teeth can the exhaust cam sprocket be out before timing causes backfire? Alternatively, i'm thinking i had an excess of fuel in the chamber since I was cranking so long without the coil pulgged in. Would this cause a backfire? I'm not ruling out spark plugs, wires, coil pack, transistor or injectors.... Just worried about the important stuff first. Thanks. |
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| Author: | Mechacode [ Sun Nov 20, 2005 10:42 am ] |
| Post subject: | |
Doesn't sound like a big problem, just had to clear out the fuel in the cylinders. |
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| Author: | Flying Eagle [ Sun Nov 20, 2005 11:04 am ] |
| Post subject: | |
Have you seen the amount of fuel that is dumped out of the injectors in cold flood mode? When you test this with a single injector or even just the fuel rail in to an appropriately wrapped 2L bottle, you will understand just have much has gotten into the chamber and past the valves. Once you light up that mixture in the chamber, you will also light up anything in the exhaust stream and sometimes into the intake while cranking. Does the car run without problems now, or are you waiting to check if you have done everything correctly? If your timing marks are good, then you can run it without hesistation. If you have your timing off more than a tooth, you would have problems however. IIRC |
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| Author: | Mechacode [ Sun Nov 20, 2005 12:13 pm ] |
| Post subject: | |
Quote: Have you seen the amount of fuel that is dumped out of the injectors in cold flood mode?
Nope.
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| Author: | Flying Eagle [ Sun Nov 20, 2005 2:09 pm ] |
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I meant Waxie but you can be included too! hehe |
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| Author: | waxie1 [ Sun Nov 20, 2005 4:25 pm ] |
| Post subject: | |
Once it backfired i stopped cranking straight away and left it alone. I think maybe i'm being paranoid, because i was certain all my timing marks were okay. Before i plugged the coil in, during the hard cranking the motor seemed to be turning fine, no strange noises heard. Also when i removed a spark plug to check, it reeked of fuel. Okay this afternoon when i get home from work, i'll try again.  Keep you posted.
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| Author: | waxie1 [ Mon Nov 21, 2005 12:59 am ] |
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Woo hoo!!!!! All okay, i'm so relieved! Backfired slightly again then started fine Wow that start was along time coming... Thanks so much for your reassurance!
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| Author: | netninja2001 [ Mon Nov 21, 2005 1:08 am ] |
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well when you think about it, it's a 50/50 shot you'd destroy your engine, and it's not like WE have anything to lose... HAHAHAHA, ok, i'm just kidding! but i'm glad your car fired right up!
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| Author: | waxie1 [ Mon Nov 21, 2005 1:23 am ] |
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Totally!!! But it was those few needed words that gave me the strength to turn that key again... I was seriously scared shiteless.... I knew i had done everything right tho and needed backup of this.... Anyway, onto the next problem, now my ecu's giving me hassles... (Yay!) God i love messing with cars. 
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