Boring a 1.5 SOHC to 1.6

MMamdouh · Post by **MMamdouh** » Wed Oct 19, 2005 12:45 pm

well... my car is getting a bit late on startups now, not as bad as it used to be ofcorse but is is not as fast when the injectors were brand new.

i think the fuel in this country is very bad.

MMamdouh

KIMO · Post by **KIMO** » Wed Oct 19, 2005 8:36 pm

yes this what i am thinking to

every time i check the fuel filter i found it very dirty

but may be there is somthing wrong other than injectors, becuse at last time i went to the agency at abou rawash i noticed that about 80% of lanos or nubera cars have delay in start.

and i have fried who has nubera and he face this problem after 40,000 km and he change the injectors at agency on their chage and after 3 months the problem come back again

may be the fuel or bad injectors or any other defect part.

i search the net and found it may me the defected crank shaft position sensor, so the car take long time for correct signal the detect the of poistion of shft to start firing, the defected sensor affect by hea soaking.

kimo

MMamdouh · Post by **MMamdouh** » Thu Oct 20, 2005 6:40 am

KIMO wrote:yes this what i am thinking to

every time i check the fuel filter i found it very dirty

yeah... tell me about it, the fuel here got more dirt than it got combustable ingredients... check this link to see
http://www.daewootech.com/forum/viewtop ... c&start=15

but may be there is somthing wrong other than injectors, becuse at last time i went to the agency at abou rawash i noticed that about 80% of lanos or nubera cars have delay in start.

my mechanic told me that late starts is an inherent thing with daewoos we have here... no idea why is that

and i have fried who has nubera and he face this problem after 40,000 km and he change the injectors at agency on their chage and after 3 months the problem come back again

may be the fuel or bad injectors or any other defect part.

i remebred you saying that when it started happening to me... never thought this will happen after such short time.

i search the net and found it may me the defected crank shaft position sensor, so the car take long time for correct signal the detect the of poistion of shft to start firing, the defected sensor affect by hea soaking.

well... i don't think so... if that is the case then you should have a CEL, also why would the problem go away when you replace the injectors??, why does the car start right away when it is parked overnight or when it was turned off for just a little period?

i hardly think it is the crank sensor or any other sensor... i still suspect the fuel system and i just can't blame it on the GM injectors 'cause our fuel will foul any injector out their.

MMamdouh

KIMO · Post by **KIMO** » Thu Oct 20, 2005 8:14 am

her is a copy from whatvi read
Car Runs but Won't Re-Start; Bad RPM Sensor. I recently posted a starting problem with a 1991 240, where it would start fine when it was cold and would start fine hot if restarted immediately after cutting off the engine. However, if it were left for 10 minutes or more after cutting it off hot, the starter motor would just turn and turn until it finally started - sometimes it did not and the battery just ran down. As it turns out, it was the RPM sensor, which is also a crankshaft position sensor. The heat soak after turning off the engine made the sensor open circuit most of the time - during starting, apparently, the computer did not pick up enough crankshaft position information to start the car. However, since the car ran fine if it did start, the sensor must have been intermittently putting out a signal, enough to update the computer in order to correctly operate the fuel injection and ignition systems after starting. After replacing the sensor, I have had no further problems with starting. Just thought y'all might like to know the solution to this problem, in case your brick ever acts like this. Thanks for all your inputs to my problem.

http://www.swedishbricks.net/700900FAQ/ ... rt_Bad_RPM

MMamdouh · Post by **MMamdouh** » Thu Oct 20, 2005 9:15 am

thats very intresting indeed.

ok it explains why the startup behavour changes with engine temp but it doesn't explain the loss of fuel pressure in the system nor the dissaperance of the problems with new injectors though.

i will get the price of the Crank Position Sensor to see if i can buy one and replace mine but i don't think that will be cheap... i will try to find a used one in a good condition just for testing purposes.

guys... what do you think about the diagnosis that KIMO shared? could the CMP be really our problem rather than injectors??

MMamdouh

KIMO · Post by **KIMO** » Thu Oct 20, 2005 9:35 am

As i remember it cost arround 180 LE. ar less

MMamdouh · Post by **MMamdouh** » Thu Oct 20, 2005 9:48 am

MMamdouh

Post by **Efratech** » Thu Oct 20, 2005 9:15 pm

why u just dont get a complete 1.6 sohc block and swap it... less hassle

MMamdouh · Post by **MMamdouh** » Fri Oct 21, 2005 3:45 pm

will that engine work on the 1.5 SOHC ECU and wiring??... remeber the only 1.6 SOHC we have here is an OPEL engine.

MMamdouh

Post by **Efratech** » Fri Oct 21, 2005 9:01 pm

i said the block...

your under drive pully and other accesories should fit there.

you should use your head to keep all your sensors, etc.

MMamdouh · Post by **MMamdouh** » Sat Oct 22, 2005 12:40 am

got your point, i suppose this means that the 1.6 SOHC block is not the same as the 1.6 DOHC... right?

MMamdouh

karim · Post by **karim** » Sun Oct 23, 2005 11:37 am

Right

mmamdouh wrote:got your point, i suppose this means that the 1.6 SOHC block is not the same as the 1.6 DOHC... right?

MMamdouh

MMamdouh · Post by **MMamdouh** » Sun Oct 23, 2005 1:41 pm

so i suppose the 1.6 DOHC head will fit the 1.5 SOHC... right?

MMamdouh

MMamdouh · Post by **MMamdouh** » Thu Oct 27, 2005 8:58 am

hey KIMO i have noticed something, when i reset my ECU last Friday the late start issue went away... could you try this with your car and see if it works for you too??

MMamdouh

MMamdouh · Post by **MMamdouh** » Thu Oct 27, 2005 4:34 pm

i have moved the posts related to the injectors issue to the appropriate post just to keep things organized:

http://www.daewootech.com/forum/viewtop ... 0&start=45

MMamdouh