574's TVS mini build
03-10-2013, 07:55 PM
#853
You need air, fuel, compression, and spark.
Air should be fine, you are supercharged and that alleviates a lot of boost leak issues due to less or no piping.
Fuel could be relay, filter, pump, etc. If you smell fuel in your dipstick then its getting fuel and washing down the cylinder into the crank case, this isnt a big deal at first but gives you indication of fuel working.
Compression could be bad timing, bad piston, bad rings, etc. Highly unlikely since you just built it.
Spark could be the ground, wiring harness not seated, if you pulled the fuse panel check to make sure all your harnesses are bolted and seated. ECU.
Its usually the simplest thing so dont fret you will find it.
Air should be fine, you are supercharged and that alleviates a lot of boost leak issues due to less or no piping.
Fuel could be relay, filter, pump, etc. If you smell fuel in your dipstick then its getting fuel and washing down the cylinder into the crank case, this isnt a big deal at first but gives you indication of fuel working.
Compression could be bad timing, bad piston, bad rings, etc. Highly unlikely since you just built it.
Spark could be the ground, wiring harness not seated, if you pulled the fuse panel check to make sure all your harnesses are bolted and seated. ECU.
Its usually the simplest thing so dont fret you will find it.
03-10-2013, 09:58 PM
#855
You can try to start it with the CPS unplugged, and it should fire after like 5 seconds. If it fires with it unplugged then you just have to line it up correctly. There are 6 ways it can go in as you know and only one is correct, however it will start even if the CPS is off time but there are one or 2 ways it can go in that it will not start. Happened to me when I put my head on. Would crank but not start. Retimed the CPS blindly and it fired after like 5 seconds. Then after I knew it was CPS related I moved the wires out of the way and set the engine at TDC again and line it up correctly....like I thought I did the first time lol. It spins so freely that sometimes is moves before it gets into the cam hex.
03-10-2013, 10:16 PM
#856
You can try to start it with the CPS unplugged, and it should fire after like 5 seconds. If it fires with it unplugged then you just have to line it up correctly. There are 6 ways it can go in as you know and only one is correct, however it will start even if the CPS is off time but there are one or 2 ways it can go in that it will not start. Happened to me when I put my head on. Would crank but not start. Retimed the CPS blindly and it fired after like 5 seconds. Then after I knew it was CPS related I moved the wires out of the way and set the engine at TDC again and line it up correctly....like I thought I did the first time lol. It spins so freely that sometimes is moves before it gets into the cam hex.
03-11-2013, 01:08 AM
#859
its a big deal period due to the fact gas in the oil from a no fire or over rich condition thins the oil to the point of not lubricating the bottom end and it will wash the cylinder walls down and remove the lubrication from the cylinder walls and gaw and destroy the ring set and it doesn't take much of a gas contaminated oil to destroy a perfectly good engine broken in or not
the rest of your post didn't need to be quoted because there are better less destructive ways to see if the fuel pump is working
the rest of your post didn't need to be quoted because there are better less destructive ways to see if the fuel pump is working
Last edited by mrbelvedere; 03-11-2013 at 01:19 AM.
Well looks like I have a whole list of **** to try now
03-13-2013, 05:31 PM
#873
Fixed Injector harness and replaced fuse and what do ya know it starts and dies, starts dies and backfires, backfire, so now I know it is CPS related.
I set cyl 4 to TDC on the compression stroke, lined the hex and stuck it in. Wouldnt start.
Did the same thing, pulled the hex out and it was lined up where it was supposed to be... Im stumped. I also tried unplugging and plugging the sensor in. Also tried taking the positive cable off the battery to reset the computer. I'm stumped
I set cyl 4 to TDC on the compression stroke, lined the hex and stuck it in. Wouldnt start.
Did the same thing, pulled the hex out and it was lined up where it was supposed to be... Im stumped. I also tried unplugging and plugging the sensor in. Also tried taking the positive cable off the battery to reset the computer. I'm stumped
03-13-2013, 06:16 PM
#874
I am stumped for you.
I too am suffering post build issues more than a month later. My car runs like a beast but only to 12 psi. I found a 2psi 2inHg leak at the bov and fixed it. I have a boost leak somewhere else and I am about out of things to try. Only thing left is the brake booster hose and waste gate flapper. Other than not getting my full boost the car runs awesome... So I feel ya.
I too am suffering post build issues more than a month later. My car runs like a beast but only to 12 psi. I found a 2psi 2inHg leak at the bov and fixed it. I have a boost leak somewhere else and I am about out of things to try. Only thing left is the brake booster hose and waste gate flapper. Other than not getting my full boost the car runs awesome... So I feel ya.