What would cause a car to backfire before the engine actually turns over. (when its trying to be started)
Valve timing? How would i go about fixing this?
Valve timing? How would i go about fixing this?
Backfire pre-startup?
- Thread starter s383mmber1
- Start date
nosechunks said:
Should i retard it a little? Or simply untill it goes away.
I highly doubt the car will still start though...
well if you retard it and it lessens/goes away its pre ignition via spark. if it doesnt go away then its not ignition related.
only other way combustion could escape would be threw a valve thats open at the wrong time.
maybe your damper timing marks are off. put a screw driver down #1 and check the marks.
only other way combustion could escape would be threw a valve thats open at the wrong time.
maybe your damper timing marks are off. put a screw driver down #1 and check the marks.
IJ. said:Fixed
Wouldnt wanna scratch that piston, or do any other damage down there
Im no stupid head mistttter Ian
i didnt mean drop it in, gently placing a screw driver would do just fine, you must have some very heavy screw drivers....
yeah, from what it sounds like i would make sure your cam gears have the right marks, and that your damper mark is in the right place. It could be as simple as that. Every symptom you describe to me sounds like an ignition problem. But thats just what it sound like, never seen the car run in person thou! but id like to
this happened to MrBaboon when he assembled his motor back together. The CPS was 180 degrees off. We couldn't figure out why his car sounded so fracked up on startup ... Nashman had a good chuckle and told us the problem
TobyCat said:this happened to MrBaboon when he assembled his motor back together. The CPS was 180 degrees off. We couldn't figure out why his car sounded so fracked up on startup ... Nashman had a good chuckle and told us the problem
Thats very interesting....my CPS is DEAD on at 0...
Ill retard it 180 and see what happens later tonight...
Here:
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=IG&P=24
then:
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=IG&P=21
lastly:
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=IG&P=20
In doing it by the book, you should be close to 10btdc. If you do it with the cam covers off, you can get it almost exact. In doing it this way with the covers on, I was @6btdc. Make sure to double check (w/ light) after the car is running and warm - this will have an effect on how it starts.
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=IG&P=24
then:
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=IG&P=21
lastly:
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=IG&P=20
In doing it by the book, you should be close to 10btdc. If you do it with the cam covers off, you can get it almost exact. In doing it this way with the covers on, I was @6btdc. Make sure to double check (w/ light) after the car is running and warm - this will have an effect on how it starts.