sr20det did head gasket now no start help please

[gigity]

I just did head gasket job and now no start I have re timed it 3 times its always right when I look at it Im no noob to sr20 but I just cant figure it out got fuel got spark. I was thinking maybe it could be intake leak or one of the hoses under the intake tore but I would figure the motor to still start even with a charge leak that small. the motor does no even try to start it just spins its got compression its not free spinning its pretty slow. But no pop or sputter not shit it ran fine before other than head gasket the motor is top mount t60 660 injectors ecu tuned for 750s w/ safc2 its not tuned but again it ran fine like that before head gasket job I guess im going to start testing fuel, compression, cas, tps?, if you guys could think of any thing it would really help thanks.

[fliprayzin240sx]

You sure about the mechanical timing? Bottom end's at TDC and cam gears lined up where they supposed to be?

[gigity]

You sure about the mechanical timing? Bottom end's at TDC and cam gears lined up where they supposed to be?


yes it perfect I have some friends that talk shit say that the mechanical timing had to be off they both now agree it is right

[jza240sx]

Timing is off. Vacuum leak wouldnt hold you back from starting it. If your getting spark and fuel then its defanatly the timing.

[gigity]

Timing is off. Vacuum leak wouldnt hold you back from starting it. If your getting spark and fuel then its defanatly the timing.


I will take pics so you all can also see it is definitely on time. Im sure it is, even pulled plug just to see #1 piston tdc at 2 mark from crank pulley, dark chain links line up with cam marks 20 rollers between the marks. Both #1 cam lobes are facing out. Any other ideas a friend of mine thinks cas may have just freak failed when fucking w/it but I doubt his idea I figure even if cas went south it would still make a pop or sputter at least try to start I even spun the cas while somebody tried to start there was no change in sound not shit. I just cant figure it out never had a no start with fucking air, fuel, and spark. Again it ran fine before head gasket job.

[Ceepo]

Fuel lines backwards? when i installed my swap i had the timing and everything right, but i had the fuel lines backwards and it wouldn't start at all, just throwin it out there...

Fuel return comes off the fuel pressure regulator(fpr)

[gigity]

Fuel lines backwards? when i installed my swap i had the timing and everything right, but i had the fuel lines backwards and it wouldn't start at all, just throwin it out there...

Fuel return comes off the fuel pressure regulator(fpr)


na too easy return on regulator. i need to check the pressure any body know how much fuel psi I need for motor to run

[gigity]

here are the timing pics really cant see cas but line meets with dot its real simple. Any thing you guys see im missing?

[gigity]

here are the timing pics really cant see cas but line meets with dot its real simple. Any thing you guys see im missing?


try for bigger pics

[gigity]

bigger pics here sr20 timing pictures by gigity - Photobucket (http://s587.photobucket.com/albums/ss316/gigity/sr20%20timing/)

[aNskY]

cas may be 180 out.... pull it out at tdc, spin it once, and re-stab it

[slow92]

I had this same thing happen to me. It is your timing. Take the extra time and spin the crank until the two discolored links match up with the timing marks on the sprockets. It wasn't until I did this that the car started up the first try.

[greenman100]

cas may be 180 out.... pull it out at tdc, spin it once, and re-stab it

This is my vote.

[gigity]

This is my vote.


That sounds convincing will have to try tomorrow do I just spin in clock wise or does it matter

[gigity]

I had this same thing happen to me. It is your timing. Take the extra time and spin the crank until the two discolored links match up with the timing marks on the sprockets. It wasn't until I did this that the car started up the first try.

Ok look at pics and see the timing is right

[bl3ujay07]

i would also agree with cas off 180. happened to me when i was doing my doing my head gasket. My CAS was off and it woldnt start unless i had it retarded (or advanced) all the way

[gigity]

i would also agree with cas off 180. happened to me when i was doing my doing my head gasket. My CAS was off and it woldnt start unless i had it retarded (or advanced) all the way


yeah it sound reasonable but even when I retard or advance all the way it does nothing I really hop just spinning it works any body know why that would not be in the fsm I figure they would have said something about it

[bl3ujay07]

it worked for me because my exhaust cam had wrong dowel pin (short one like the intake) so my timing was everywhere.

[slow92]

Ok look at pics and see the timing is right
I did look at your pics but its hard to tell if the discolored marks are aligned correctly. you asked for help and this was the same problem that I had because everyone told me to mark the chain and count the links between intake mark and exhaust mark. It wasn't until I lined everything up per the fsm and the car finally started.

[gigity]

I did look at your pics but its hard to tell if the discolored marks are aligned correctly. you asked for help and this was the same problem that I had because everyone told me to mark the chain and count the links between intake mark and exhaust mark. It wasn't until I lined everything up per the fsm and the car finally started.

and again it is on time per the fsm checked by two other non believers and the big pics I added you can clearly see the dark links line up with cam marks you can also see the crank pulley mark at 2nd from left and you can also see that both #1 cams are facing out not in, and the #1 cylinder is at its highest point if you look into it if you know something I dont about timing please share Im sure its right and I think spinning the cas is going to do the trick will let you all know tomorrow

[aNskY]

yeah it sound reasonable but even when I retard or advance all the way it does nothing I really hop just spinning it works any body know why that would not be in the fsm I figure they would have said something about it


You have to set the timing at tdc on the compression stroke. that is in the fsm. they dont detail it because factory techs know this.

on the compression stroke when you are coming up to tdc it should be hard to turn.

[gigity]

You have to set the timing at tdc on the compression stroke. that is in the fsm. they dont detail it because factory techs know this.

on the compression stroke when you are coming up to tdc it should be hard to turn.


Ok so I pulled and turned the cas and nota. So I compression tested and #1 was 150 #2 90 #3 90 #4 90 shit. Had a motor builder tell me it does not sound like I did bad head gasket job with the last three cylinders so close to each other. He said sound like timing problem to him. But why would the #1 cylinder be so high if timing was off wouldnt all cylinders be low. Also if you look at pics does it look like chain has to much slack in between cams he said that a loose chain could cause problem as well so Im going to leakdown test the cylinders and see where there leaking from. It cant be bent valves in all three cylinders. My guess is head just didnt seat right or some shit you guys let me know what you think.

[HPballer76]

please post up if you get this resolved. im having the same problem...

[gigity]

please post up if you get this resolved. im having the same problem...

my shitty detchfag injectors were leaking not at the o ring the actual injectors and the motor would not fire, unpluged fuel pump and sprayed starter fluid in intake it started right up

[aNskY]

uh so what explained 90psi on 3 cylinder?

[misfitsfreak81]

wondering about this as well. im having the same issues. im running a haltech platinum sport 1000, have spark, have fuel but no start. not even an atempt to start. checked the cas an got lower voltage than what the fsm states. im wondering if it just failed from sitting in my toolbox drawer for a year. the car ran fine just befor the motor rebuild. any suggestions would be awesome. thanks.

mike

[gigity]

uh so what explained 90psi on 3 cylinder?

Shit im sorry forgot about that. When I leak down checked the cylinders they were leaking out the exhaust valve seals have no clue how 3 valve seats are bad think last owner boosted to much and ran lean. I pulled the head off again and got it built. But then it still would not start which ended up being the fuel injectors leaking.

[gigity]

wondering about this as well. im having the same issues. im running a haltech platinum sport 1000, have spark, have fuel but no start. not even an atempt to start. checked the cas an got lower voltage than what the fsm states. im wondering if it just failed from sitting in my toolbox drawer for a year. the car ran fine just befor the motor rebuild. any suggestions would be awesome. thanks.

mike

I think the fsm says 5v to .1 is in spec thats very little voltage. So what did yours ohm out to? (try starting fluid that will tell you if it is fuel related) Did it ever run before on that haltech? I have seen a bad stand alone before.

[misfitsfreak81]

I think the fsm says 5v to .1 is in spec thats very little voltage. So what did yours ohm out to? (try starting fluid that will tell you if it is fuel related) Did it ever run before on that haltech? I have seen a bad stand alone before.

yeah it ran like a top befor the haltech. the only reason its been down for so long was that my shitty megan manifold grenaded and i thought fuckit. might as well go all the way rebuilding it.

found that my cas was deff. shot after testing and retesting and cleaning and cleaning. i finally pulled it all the way apart and found that part of the circuit board had fried due to motor oil in the casing. currently im sourcing a new cas and hope to have it up and running by the weekend.

[steve shadows]

It's always the CAS gentleman

Timing is the NO 1 thing on these cars, Timing wiht the CAS, your timing maps, the timing of your ignition spark everything is timing.

The more we focus on this the better life will be for all tuners

[jspaeth]

It's always the CAS gentleman

Timing is the NO 1 thing on these cars, Timing wiht the CAS, your timing maps, the timing of your ignition spark everything is timing.

The more we focus on this the better life will be for all tuners

2nd thread in a row you have said this haha

Steve is the Timing Nazi