s13 sr20. has fuel spark and cranks. but wont start. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

clv5045 · 07-20-2008, 11:49 AM

i just put a new turbo in it. it started right up but the rear coolant pipe for the turbo leaked. drove it for a second then parked it due to smoking. the dipstick popped off and blew oil out the dipstick onto the headers. took the headers off fixed the pipe and rechecked oil level...its good. now it wont do much more than crank. sounds like its trying but wont start. any ideads??? like i said it has fuel spark and cranks. cam sensor? crank sensor? ingnitor chip? ecu? compression/headgasket? those are the option i have figured cud be causing it but idk what wud be the most logical starting point.

slideordie_240sx · 07-20-2008, 11:03 PM

songs like the spark plugs are fouled out. try new plugs and see what it does

clv5045 · 07-21-2008, 02:46 PM

adjusted timing for cas because it was oof about 30-50 degrees which made it sputter better but still not starting. i also tried new plugs too....they were a lil black. but still no luck... please any help guys. thanks in advance and thanks for the suggestion slideordie

clv5045 · 07-21-2008, 04:45 PM

i am going to go ahead and say that its my compression - head gasket/rings - since my compression test came up with 90-55-25-25 from #1-4. f*in a. i hope i dont have to put new rings in this ho ive had it for 3 months and driven it 3 hrs total. wat a headache this project is being. i'm begining to lose hope.....120hrs into it already

clv5045 · 07-21-2008, 04:55 PM

does the motor have to be running in order to get an accurate reading for compression???

corriganjoshua · 07-21-2008, 04:59 PM

Quote:

Originally Posted by clv5045

does the motor have to be running in order to get an accurate reading for compression???

Negative sir

*KiLLeR2001* · 07-21-2008, 05:53 PM

With compression numbers like that sounds to me like your cams aren't mechanically timed correctly. I had bizarre compression numbers like that when I was building my swap and I readjusted the cams following the FSM and I got like 150psi across all four, and then she started up fine.

clv5045 · 07-26-2008, 09:21 AM

thanx guys, yeah i asked a local mechanic yesterday and he said the same thing...so thats what im about to do. thanx again.

07-21-2008, 02:46 PM	#3
clv5045 Join Date: May 2008 Location: State College PA Age: 24 Posts: 34 Trader Rating: (1) Feedback Score: 1 reviews	adjusted timing for cas because it was oof about 30-50 degrees which made it sputter better but still not starting. i also tried new plugs too....they were a lil black. but still no luck... please any help guys. thanks in advance and thanks for the suggestion slideordie __________________ 91 240 cpe w/ sr SOLD 96 240 w/ sr

07-21-2008, 04:45 PM	#4
clv5045 Join Date: May 2008 Location: State College PA Age: 24 Posts: 34 Trader Rating: (1) Feedback Score: 1 reviews	i am going to go ahead and say that its my compression - head gasket/rings - since my compression test came up with 90-55-25-25 from #1-4. f*in a. i hope i dont have to put new rings in this ho ive had it for 3 months and driven it 3 hrs total. wat a headache this project is being. i'm begining to lose hope.....120hrs into it already __________________ 91 240 cpe w/ sr SOLD 96 240 w/ sr

07-21-2008, 04:55 PM	#5
clv5045 Join Date: May 2008 Location: State College PA Age: 24 Posts: 34 Trader Rating: (1) Feedback Score: 1 reviews	does the motor have to be running in order to get an accurate reading for compression??? __________________ 91 240 cpe w/ sr SOLD 96 240 w/ sr

07-21-2008, 05:53 PM	#7
KiLLeR2001 Premium Member Join Date: Jun 2007 Location: オーランドフロリダ Posts: 5,371 Trader Rating: (25) Feedback Score: 25 reviews	With compression numbers like that sounds to me like your cams aren't mechanically timed correctly. I had bizarre compression numbers like that when I was building my swap and I readjusted the cams following the FSM and I got like 150psi across all four, and then she started up fine. __________________ * THC: The Hardtop Coalition *

07-26-2008, 09:21 AM	#8
clv5045 Join Date: May 2008 Location: State College PA Age: 24 Posts: 34 Trader Rating: (1) Feedback Score: 1 reviews	thanx guys, yeah i asked a local mechanic yesterday and he said the same thing...so thats what im about to do. thanx again. __________________ 91 240 cpe w/ sr SOLD 96 240 w/ sr

07-20-2008, 11:49 AM	#1
clv5045 Join Date: May 2008 Location: State College PA Age: 24 Posts: 34 Trader Rating: (1) Feedback Score: 1 reviews	s13 sr20. has fuel spark and cranks. but wont start. i just put a new turbo in it. it started right up but the rear coolant pipe for the turbo leaked. drove it for a second then parked it due to smoking. the dipstick popped off and blew oil out the dipstick onto the headers. took the headers off fixed the pipe and rechecked oil level...its good. now it wont do much more than crank. sounds like its trying but wont start. any ideads??? like i said it has fuel spark and cranks. cam sensor? crank sensor? ingnitor chip? ecu? compression/headgasket? those are the option i have figured cud be causing it but idk what wud be the most logical starting point. Last edited by clv5045; 07-20-2008 at 02:10 PM..

07-20-2008, 11:03 PM	#2
slideordie_240sx Join Date: Jun 2005 Location: Gainesville Posts: 25 Trader Rating: (0) Feedback Score: 0 reviews	songs like the spark plugs are fouled out. try new plugs and see what it does

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