ok so i just rebuild my gsr motor finally got it put back together and being trying to get it to start for 3 weeks now and i'm stumped, we done the timing like 8 times on the 7th time we got it to start and it wouldnt idle it would die, we adjusted the dizzy for like an hour, still nothing so i figured it was off a little on the timing so we just redid the timing again and now it wont start at all it, it backfired a few times and i'm just lost. we have fuel and spark and air have tested all of them like 100000 times and i'm just lost looking for some ideas or any direction

thanks

 

If you just rebuilt it and it won't start, I'd check the compression

 

You need to check the basics. Getting spark, air and fuel are basics but if your cam timing is off, your engine is getting all the right things at the wrong times.

Easiest thing to check is your firing order. Make sure your plug wires are in the right order on the cap and the cylinder. If that's correct, you need to put everything to TDC (top dead centre) on the number one cylinder (driver side) and make sure your cam gears are lined up and your crank timing mark is lined up to where they should be. IF these things are all correct and it still doesn't start, you need to tell us what else was done to your motor.

 

Make sure you didn't switch the TPS and Map sensor plugs on accident. I've seen that happen many times.

Do a compression test, post the numbers. Also, your plugs may be fouled out.

 

make sure the valve lash is set properly, when they are tight it will be difficult to start or not want to idle.

 

ok so i gonnna go check my valve lash, double check my sensors, and try to do a comp test and if still nothing i will be back on here to see what everyone said

mod list(hopefully everything)

eagle rods
cp pistons 9 to 1 stock bore
acl bearings
port and polished the head
3 angle valve job
supertech valves
supertech valve springs
supertech titutim retainers
stock exhaust
victor x i/m
68mm t/b
greedy timing belt


thanks

 

spark plug wire order is probably wrong

 

well last night, it stopped back firing and sounded like it was about to start
so i think we are down with the back firing

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Spody02 &raquo;</TD></TR><TR><TD CLASS="quote">well last night, it stopped back firing and sounded like it was about to start
so i think we are down with the back firing </TD></TR></TABLE>


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by twinksack &raquo;</TD></TR><TR><TD CLASS="quote">spark plug wire order is probably wrong</TD></TR></TABLE>


If not, it's a timing issue, either cam or spark.

 

got it to start, whoever said something about checking my valve lash was right, i completely forgot to check they were way too tight so we adjusted those and it started right up and it runs just great!

thanks buddy!!!!!!!!!!!

 

 

CHECK THE PLUG WIRE ORDER

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EBEATS &raquo;</TD></TR><TR><TD CLASS="quote">CHECK THE PLUG WIRE ORDER</TD></TR></TABLE>


Read much

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Spody02 &raquo;</TD></TR><TR><TD CLASS="quote">got it to start, whoever said something about checking my valve lash was right, i completely forgot to check they were way too tight so we adjusted those and it started right up and it runs just great!

thanks buddy!!!!!!!!!!!</TD></TR></TABLE>