Wont Start Help!
#1
Launching!
Thread Starter
iTrader: (8)
Join Date: Mar 2008
Posts: 266
Likes: 0
Received 0 Likes
on
0 Posts
Wont Start Help!
i just got done my H/C install but when i went to start it it wont fire up. i installed LS6 oil pump, MS4 cam/LS6 Ported heads, 30# SVO injectors, UD pulley. im wondering if the injectors is just washing down the cylinders because for now im on stock tune. i pulled the valve covers and the see the rockers moving so i know the cam is turning.... any help would be appreciated thanks
#3
Launching!
Thread Starter
iTrader: (8)
Join Date: Mar 2008
Posts: 266
Likes: 0
Received 0 Likes
on
0 Posts
you think thats y its not starting? its turning over but not firing..... while its trying to start theres like a thumping sound coming out the headers guessing the cam is turning but no action... thanks
#5
Launching!
Thread Starter
iTrader: (8)
Join Date: Mar 2008
Posts: 266
Likes: 0
Received 0 Likes
on
0 Posts
nope cant be the injectors i just swapped stock back in and still no start. only very little white smoke coming out the intake. do they sell a tool to assure that the cam is aligned straight dot to dot?? i just played it by eye
#7
Launching!
Thread Starter
iTrader: (8)
Join Date: Mar 2008
Posts: 266
Likes: 0
Received 0 Likes
on
0 Posts
Jus opened my timing cover and it reaks of gas! also while jacking up the front of my car gas was coming out my headers(open headers).... could it be that it just wasnt starting because it was being washed down with wayy to much gas? also if i hand turn the motor and it only turns so much before it locks up...does it mean that the cam is installed wrong?? thanks!
Last edited by 2002 SS; 06-30-2009 at 11:14 PM.
Trending Topics
#9
Launching!
Thread Starter
iTrader: (8)
Join Date: Mar 2008
Posts: 266
Likes: 0
Received 0 Likes
on
0 Posts
also the plugs were covered with gas so obviously it couldnt give any spark anymore. the only way the motor turns by hand is if i loose the rockers (guessing thats bringing the valves back up)... could this be a sign of PTV issues?
#12
TECH Addict
iTrader: (8)
Join Date: Oct 2008
Location: toronto ontario canada
Posts: 2,047
Likes: 0
Received 2 Likes
on
2 Posts
first i would take out all the spark plugs and disconnect all the injectors. then crank the motor a couple of times to get rid of some of the gas that is in the cylinders, then throw everything back together (new spark plugs preferably) and try starting it.
#13
Launching!
Thread Starter
iTrader: (8)
Join Date: Mar 2008
Posts: 266
Likes: 0
Received 0 Likes
on
0 Posts
thanks for all the tips guys! BTW if i broke my coolant temp sensor on the head would that cause it to not fire?? and i did a search and read everyone talking about the cam/crank sensors.. i didnt notice any sensor on neither of them. can someone help me out, this was my first swap and now im starting to freak lol. thanks for your help!
#15
Launching!
Thread Starter
iTrader: (8)
Join Date: Mar 2008
Posts: 266
Likes: 0
Received 0 Likes
on
0 Posts
oh ok thanks. so i didnt take out those sensors.. thought i was goin blind lol. like i asked above... could it just be because i have a broken coolant sensor on the head be the reason why it wont start at all?
#16
TECH Addict
You can't just stick new injectors in there without adjusting for them. Take the plugs out and with everything else hooked up turn it over by hand to make sure it turns freely. If it does, make sure you have the original injectors in, put in new plugs, make sure all your connections are tight and correct and fire it up. The temp sensor will not stop it from starting.
#18
TECH Resident
iTrader: (3)
Join Date: Mar 2008
Location: Joliet Illinois
Posts: 966
Likes: 0
Received 0 Likes
on
0 Posts
p.s if you do get it started change the oil right away, alot of the extra gass will end up in the oil.
#20
TECH Senior Member
Looks like your injectors are "leaking" badly... I suspect your injector harness is shorted to ground keeping the injectors on all the time... (or maybe your PCM is bad... I don't think it is...).
If the crank sensor was bad then the injectors (and the spark plugs) would not fire.
If the crank sensor was bad then the injectors (and the spark plugs) would not fire.