fiestacosworth

Hi Adam. The base timing is set as it was when the car was running perfect before. And pulley etc all in the same place. Offset has always been set to -87 and this was confirmed by the mapper when the car was set up. And he used a timing light. I can try changing it 360 degrees ? It’s honestly mind boggling

Hi i need help with this still. after last time i found several issues with the old wiring loom. so i built a new loom using a genuine link 2.5m wiring kit. i also removed the engine and done a complete refresh of everything. new sensors gaskets etc etc. all back together tested coils and injectors all ok. checked for spark when cranking ok. compression all good. engine was timed with dti and is perfect. however it will not start still!! i have attached another log from tonight. am i missing something ? had a jump pack on the battery to help too. any help would be great. fiesta non start.llg

Hi Adam. I'm running a 36-1 crank pulley and 1 tooth phase sensor. coil on plug. it was last mapped around 6 months ago and has been perfect since not a single issue. I literally just reversed it back and 2 minutes later I have this issue. I have checked my gaps and the crank sensor is relatively new. the phase sensor is a genuine marelli one. Hi Mark yes but not clints loom.

Posting this to see if anyone comes up with something that I might have missed. So my fiesta Cosworth has been running perfect!! Started it to move it out the way walked back over to it 2 minutes later and it was running like a bag of S***! Running on a link monsoon ecu cop conversion. Bosch ev14 injectors bought brand new only a few months ago. Went to move it and it cut out. Tried to restart it and tries to fire but backfires. Pulled the plugs all fouled up! New plugs fouled them straight away. Tested coils and injectors through link software all clicking ok. new genuine phase and crank sensors fitted a few months ago and both gapped fine. Re checked and still ok. also has new iat and ect sensors fitted. Vacuum pipe to map sensor that’s built into the ecu is fine. Cannot find any other leaks have smoke tested intake system. Fuel pressure is good as I suspect with how rich it is! Tps sensor is working fine as checked on live data. Cannot see anything untoward. Now I cannot get it to start at all. Just turns over. Done a compression test for good measure 150psi on all 4 cylinders. checked timing and spot on. found an earth wire that was disconnected on the block so re connected it. removed plugs and left out to completely dry out. got it to start but runs awful and will not idle. i logged it and have attached the logs. don't know where to go from here can anyone see anything that i am missing ? thanks fiesta fault will not run..llg FIESTA COSWOTH NON START.llg

Well thinking about it then. What may have happened is that all the issues with power supply before have caused the sensor to be damaged maybe. I can try the cap. I do have it wired to a relay from its own power supply direct from the battery. But it can’t hurt.

Hi Adam. So strange. I had problems with the can lambda before due to the power supply so it wouldn’t work at all. I re wired it with a seperate power supply and it’s worked absolutely perfect. Had it mapped a few weeks back and all perfectly fine no errors. Done probably 40 miles in the car and it’s now started doing this. My 1st can lambda unit gave up so I got sent a replacement. Like I said I have put the car on my emmisions machine and the engine is actually running spot on and where it should be. Just seems strange to happen all of a sudden.

log attached. i have had the car on my mot emissions machine and the car is running at 0.9 lambda LAMBDA READING.llg

Hi. I wondering if anyone can help. My can lambda has been absolutely fine. Not plugged into the car for a while. Wanted to adjust some cold start this morning. And notice my can lambda is reading between 5 and 7!! This surly can’t be right as the engine is running sweet. Anyone has this before ? I disconnected the plug and reconnected and it was reading .9 lambda. Then after a few seconds jumped back up to 5!! Thanks

The ecu has been fitted to the car for a wile and had another engine previous. This statistics are old. It hasn’t made that rpm or air temp or map with us running it. No trigger errors at all. Very confusing.

Map limit is set to 320kpa. Map sensor is built in on board 4 bar that comes on the link xtream ecu. Not tried a manual controller no as we have control. Just can’t go over 1.1 bar of boost or it’s like there is a cut. But there are no limits set that low.

Ok. So had some time on this evo today. And done a few changes. Changed the dwell of the coils to 2.5ms. Set the gearchange duty cycle table to 0. Checked the fuel pressure and fitted new plugs gapped to 0.5mm. All ok and running well.... however. Now if we try and adjust the boost up the car has the same problem that it had before of that bogging down and cutting. We cannot get it to run anymore than 1.1 bar or boost. It made good power at this. However cannot work out why we cannot run anymore boost. Fuel and ignition are good. Why can we not run anymore boost ? I have attached a photo of the run we managed to achieve. Any ideas as to what’s causing the issue guys ?

The guy bought the car with the ecu fitted. And a blown engine. He supplied a new engine turbo etc and we installed in. It is annoying that lambda isn’t on there or fuel pressure. However when on the dyno we are running a wideband so can see what it’s doing and it’s ok. I do agree I need to perform a fuel pressure test to be sure it’s ok. When it happens the lambda reading goes rich - lean - rich - lean and then carry’s on smooth. Also we have 0 trigger errors so I ruled that out.

I understand that. However this makes sense as to why we have no boost control. Any ideas yourself of what it could be causing the issue ?

Ahh ok! So it’s applying 100% wastegate duty cycle all the time. Regardless of wastgate table! This could well be the issue! Why the hell would it be set to that as standard. We don’t have the gears wired in. So I can set this to 0 and just use the wastgate table.

Ok so fuel starvation. I will hook up a fuel pressure gauge and check it. Customer told me it has a walbro unrated pump in there. But needs checking. I also read somewhere last night that the evos have a restrictor on the return line in the tank and it messes up the fuel pressure. So will have to check that also.