HELP REALLY NEEDED ASAP!!! :(

daewoomofo · Post by **daewoomofo** » Mon Aug 11, 2008 9:50 pm

if you have low compression and white smoke id bet you have a blown head gasket, or a warped head. neither of those would cause the injector to stay open. they might be 2 totaly unrelated problems

Big Jeff · Post by **Big Jeff** » Mon Aug 11, 2008 10:24 pm

daewoomofo wrote:if you have low compression and white smoke id bet you have a blown head gasket, or a warped head. neither of those would cause the injector to stay open. they might be 2 totaly unrelated problems

if you have blown your head gasket it would be 99% sure you have warped your head.

and is it possilbe that the injector is stay open coz it dirty so it sticks open?

have they tries changing the injectors and flushing the fuel system

Colin009uk · Post by **Colin009uk** » Mon Aug 11, 2008 10:49 pm

thanks, i will mention tommorow if i phone up to check, hopefully they can tell me what the problem is either way just getting annoyed with them.. thanks again will let u know

buddha102 · Post by **buddha102** » Mon Aug 11, 2008 11:41 pm

Big Jeff wrote:
daewoomofo wrote:if you have low compression and white smoke id bet you have a blown head gasket, or a warped head. neither of those would cause the injector to stay open. they might be 2 totaly unrelated problems
if you have blown your head gasket it would be 99% sure you have warped your head.

and is it possilbe that the injector is stay open coz it dirty so it sticks open?
have they tries changing the injectors and flushing the fuel system

maybe put some injector's cleaner into the tank? that would maybe solve the injector problem

(i hope

)

Post by **PrecisionBoost** » Tue Aug 12, 2008 6:26 am

Well...... I guess I will mention a few things....

If one injector is staying open then the ECU would try to accomidate by running the other three cylinders lean ( since the one rich cylinder will make the exhaust richer)

The engine tries to run a nice 14.7:1 air/fuel ratio.... so... if one cylinder is running really rich ( 8:1 ) then the other three have to run at 16:1 to make up for the one bad cylinder in order to get to 14.7:1

Allways keep in mind that the ECU takes the reading from all four cylinders and it never knows the Air/Fuel from any one single cylinder.

So... you could have one at 14:1 one at 16:1 one at 15:1 and the last one at 13.8:1 and the total combined Air/Fuel will be exactly 14.7:1 even though not a single cylinder is running the optimal Air/Fuel

When they are all over the place you will get less power and therefore less power.... and in severe cases where an injector fails... you can damage other cylinders.

Problems can range from damaged plugs to damaged piston rings to pistons with holes in them if things are not handled right away.

Personally I doubt that the ECU is at fault.... it's more likely an injector stuck open ( build up of gunk.... or simply damage/wear from time )

For less than 600 pounds you can pull a decent 1.6L from a Vauxhall (with slightly better compression ratio and power) and be done with it..... but then again that's just me.... I have the time to swap over the components from the Vaux to make it work in the Daewoo..... if a shop is going to do it.... they will probably want your weight in gold.

Any decent shop will have the OBD2 code that the ECU generated.... which should tell them and you what is going on.

Post by **PrecisionBoost** » Tue Aug 12, 2008 6:35 am

Oh.... one quick note.... a very common thing people miss is a blocked PCV ( positive crankcase ventilation ) valve.

If the PVC valve is not functioning you can run into all kinds of problems.... including smoke ( usually oil )