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conversion problems :(

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Old 14-08-2008 | 10:54 PM
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Default conversion problems :(

hi everyone,

i was just after abit of advice. i have just stuck a fiesta turbo engine into my XR2i and it hesitates badly, misfires and smokes more than me!, so much so that i cant drive it.
i used the proper loom and ecu cant remember weather it was OFAB or OFAC, but it was the better of the two.
it has a brand new T3 garrett turbo
i also fitted an escort cosworth fuel pump, its still on the standard blue injectors at the moment.
one thing i did notice though was when im did the cam belt timing and lined up the pulley arrow to the dot on the head and the crank arrow to the dot on the block the marker on the flywheel did not match up to the mark on the block, i tried to sort this out by unbolting the flywheel and rotating it but the bolts are offset so it can only go on one way. would this make it run like a heap of s**t as the carnk sensor might be reading at the wrong time or should i just ignore this. wrong flywheel?
what about headgasket failure?
would taking the amal valve out and replacing it with a boost controller cause this (its only on standard boost at the moment untill i get it mapped)
or maybe a boost leak? dodgy ISCV sensor or any sensor you can think of, i have really hit a brick wall with this now and am desperate for help. i dont want to set it alight but its getting close!!!!

thanks in advance, dave
Old 15-08-2008 | 06:43 AM
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tabetha
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If the mark at one end(pulley) lines up but the other end(flywheel) doesn't this is the first thing that needs sorting, something is wrong possibly a mismatch of components.
Use a dial gauge to check the true TDC, then work from that to determine which is wrong, don't forget BOTH valves will be closed on number 1 at tdc.
If the flywheel is out everything to do with ignition will be out as well.
tabetha
Old 15-08-2008 | 08:00 AM
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The crank sensor is only there to pre-determain TDC, the EDIS unit will fire a spark 90degrees before top dead centre then it will send a signal to the EEC setting a binary adress for each cylinder TDC then the EEC will reset the spark for Top Dead Centre. Is it possible that the cam is 360degrees out?? It should have 2 turns per 1 crank revaloution.
Old 26-08-2008 | 08:29 PM
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hhhmmm yeah i suppose the cam could be, would it not smash the valves up though?

is there a guide or anything on here that tells you how to check this?
Old 26-08-2008 | 08:41 PM
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You can't time a cam 360 wrong on a management that's based on wasted spark and batch injection. The flywheel is also spot on, because it will only go in one way. The missing tooth should not be aligned with the sensor at TDC as this is the triggering point.
Old 26-08-2008 | 08:57 PM
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Originally Posted by peachy
The crank sensor is only there to pre-determain TDC, the EDIS unit will fire a spark 90degrees before top dead centre then it will send a signal to the EEC setting a binary adress for each cylinder TDC then the EEC will reset the spark for Top Dead Centre. Is it possible that the cam is 360degrees out?? It should have 2 turns per 1 crank revaloution.
What? There is no voodoo like that going on, there is just PIP and SAW signals. One is the effective crank signal to go to the ECU so it knows the crank position (and in conjunction with the cam phase sensor, it knows what cycle its on), and the other signal is the modifying spark angle from the base 10 degrees that the EDIS module operates from (basically).

EDIS-4 always has a trigger point of 90 degrees BTDC. There are certainly no sparks being fired here!!!
Old 27-08-2008 | 01:29 PM
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hhhhhhhhhhhmmmmmmmm well im properly headfucked!!!

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Old 27-08-2008 | 02:02 PM
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Speak to Jonesymk2 on here (or ukfordoc.com). He has the same problem when he installs these and it is normally a single wire that is showing +12v instead of earth (or the other way round). He will be able to give you the answer no problem.
Old 27-08-2008 | 03:47 PM
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wicked just sent him a pm thanks alot
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