Hobomassiv

Hi,

I bought a Ka RST a couple of weeks ago, and have been tidying it up and trying to get it running right, but im no mechanic, RST expert, or anything and im having a few problems. I know Ka's quite well and im pretty practical so willing to try anything.

I changed the oil/filer plugs/leads oil pressure switch dizzy cap and rotor arm already as a general service.

Spec

1.6CVH
T3 stg3
Piper T285 cam
Gotech MFI
FRST EFi Inlet
Chargecooler
Twin smaller rads because of space
Manual steering

I have printouts from Jamsport in the reciepts proving it was ~200bhp before but its noticably lacking against my mates heavier 160bhp ERST.


Heres a pic:



Lazy Starting - Sounds like the starter is having a hard time cranking the engine, does it from cold or hot (thought it might be heat soak in the small bay). I replaced the starter with a CVH fiesta one from the scrapyard. The first two starts it was fine but then went back to the same symptoms. I think it might be electrical/earth problem more than anything? Im running the battery to teh boot and at the same time am going to upgrade the major earths and positives with 0 guage anyway will this help?

Vacuum leak - All hoses look ok, however if i pump the break when idling the idle smooths right out so i guess thats the problem. Where do i need to look?

Running rich - you can smell the petrol quite strongly, and im suspicious someone has touched the fuelling knob on the ECU, any ideas?

A couple of times its felt like it was holding back,hesitant or has the odd pop, however i havent been ragging it as i want to look after it and i know its not running right.


Thanks

Shonky

I might be worth taking it back to jamsport for a look over if you get no joy with the beefing up the wires.

Can you get any data out of the Gotech?

Have you tried changing the coolant sensor?

phil_rs

iTrader: (3)

Funnily enough I bid on this car on ebay but was removed from there. I would only go back to Jamsport as a last resort, they like to charge and do shoddy work IME. My track car has gotech fitted by Jamsport and is also rich from the smell of it and the fact it eats plugs. I'm trying to find someone who can have a look at the map for me

Hobomassiv

I actually saw it there, and called the bloke straight away and made an offer!

I take it theres some software i can get hold of so i can look at it whilst running?

phil_rs

iTrader: (3)

Yes mate you can download the software from the Gotech website but you will need an older laptop with a serial port

Hobomassiv

Nice one, ive literally jsut found it. Printed off the installation guide as well so i can check all the wiring.


One thing i notice already is that the Gotech manual says that the air temperature sensor should be in ambient, however it appears to have been put on the rocker cover. you can imagine how hot that gets in a ka bay!

I think it might be a long weekend dash out and pipes off jobbie.

Hobomassiv

Anymore ideas people? there are loads of turbo owners here surely someone has had similar problems

mk3cosproject

i have the exact same problem on a 99 1.4 cvh (same starter) the starters are never gr8 standard but aparently theres an aftermarket 1 that is better. the car in the scrappy could have had the same problem like??? just a guess at it. mine also had corrosion on the battery terminals and on the starter wire heads if you get my meaning clean them up with a bit of sandpaper and the therminals there a lil wire brush tool you can buy. worth a try. also if your running a performance cam thats very racey it wont idle perfect either???

m.broster

the air temp sensor needs to measure the charge temp not ambient.

also be worth checking if the map sensor pipe has any splits in it.

when you connect to your laptop set the fuel pot to 0. if you need any help on it just give us a call at jamsport.

Shonky

Did you have any luck with it on the weekend?

Hobomassiv

OK,

Car is back running again (have been re running battery cables) Seems to start a lot better than it did.

Vacuum leak seems to be sorted (as far as i can tell), as pumping the brakes doesnt affect idling anymore. I have the gotech MAP pipe on its own inlet takeoff, and then the guage and fuel pressure split on the other takeoff.

From looking at the cam (piper) it is currently set up 10 degrees retarded.

the 'AIR TEMP' sensor - it doesnt look to me like it goes anywhere, was casually cable tied to the injector wiring and doesnt have a proper connector or fitting, its a thermistor on some wire. I did try starting and running it with this sensor tucked into the intake hose on the top of the engine but it made no difference and you could hear the air leaking so i took it back out. The gotech manual clearly states this is outside air temp though i checked (straight off of the manual on their website)

Also it seems to be REALLY smokey now, maybe the turbo oil seal or valve stem seals? It wasnt nearly as bad on the journey back from buying it.

Im going to try and get a laptop hooked up to it and maybe go from there? unless there are any obvious checks i can do?

cj_rst

Just to add, it's got a vernier pulley that's set to 10 degrees retarded. The timing on the dissy looks to be well out too but I didn't want to touch anything for the moment. I reckon setting everything back to standard timing and working from scratch would be the best bet. Or even setting it all to standard timing and then taking it somewhere for a proper set up.

Gotech manual seems a bit ambiguous as the air temp sensor it refers to needing a connector that you can screw in to your inlet pipe so I reckon it's got to be charge temp. Plus there's no other charge temp sensor connected up in the bay so it would be logical for that to be it. Can the standard FRST charge temp sensor be connected up to the gotech? The hall sender and ERST throttle position are, so if we could use the FRST charge temp sensor already in the inlet manifold then that would be a good solution. Just need to know if it operates in the range the gotech will be able to use?

It's definitely started to get very smokey on start up. This does clear after a few mins but it's pretty smokey. I've got some stem seals so we can change those and see what happens. If that doesn't sort it then it's got to be turbo seals surely?

cj_rst

Fair enough this is your experience but in mine they did a good job. Took my car there about a year ago for a set up and 2 front wheel bearings while it was there. It's run fine all year with 0 problems so I'm happy

phil_rs

iTrader: (3)

Fair enough, I know they have happy customers, unfortunately I wasn't one of them

Are you running MFI? I'm curious to what they have set your idle co at

cj_rst

Yep MFI. Ummm don't know what the idle Co is actually at. They idle nice with a slightly rich Co tho. I've passed an MOT since the set up so I doubt it's terrible!

phil_rs

iTrader: (3)

That's good to hear, they set mine at 9% and wouldn't idle. It wouldn't pass an MOT and caused bore wash. Very bad experience!

Hobomassiv

Here is the sensor:



And you can see how awfult eh vacuum hose situation was before i tidied it.

phil_rs

iTrader: (3)

On my track car, that sensor has been pushed up the side of the silicone pipe that goes onto the throttle body

Hobomassiv

Ok,

I tried doing that, but it ran the same, and you could hear the air in the gaps couldnt get a great seal on the hose.

Fiesta_Jed

It might be running rich because of the cam.

Only way to tell is with an afr gauge.

Gotech mfi is actually efi. So unless you can map you should take it to a tuner.

Hobomassiv

I guessed that early on, it has injectors! However it is still run from a dizzy and coil ignition wise.

I cant map, however i was going to plug the car in and copy the map, or see what i can see.

Im looking round for tuners to take it to, i wouldnt mind going to Jamsport as they built and mapped it originally but its far enough away to be annoying.

Hobomassiv

Well ive been looking at some data ive logged today.

About 55 seconds long, two 'revs' after about 30 secs.

I was going through the different inputs and it looks like 'ignition angle' didnt start logging until about 45 seconds in, just as the engine had returned to idle from the second rev.

This doesnt seem right?

Im guessing it is the connector on the distrubutor casing, does it seem like it is faulty or is there another issue?

Hobomassiv

any ideas anyone?

Im tempted to time it back to standard and then advance it until it matches the map and runs better.

I really dont think the map has been fiddled with.

I was taking the car to have some welding done and broke down on the way, i think it was flooded with fuel. It progressively started spitting and banging more and holding back untill the power cut and it just coasted.


Here are some pics, one is the sensor on the dizzy i was talking about that might be duff and you can see the marks from where its been timed before



This is the connector usually used for temp sensing on standard fiesta management isnt it? does anyone know the value of it? Gotech do a screw in temp sensor but helpfully not for the MFI only the PRO.



Where can i get soem reducers for these vacuum hoses, as you can see there is still three sizes present

Hobomassiv

Seem to only have one (major ish) problem with it now.

It sits and idles fine and will rev happily, however when i take it out and start put it under some load it hits about where it comes on boost and then spits and misses and eventually after a few mins driving it cuts out and wont start up again!

ANY IDEAS WELCOME!

m.broster

the air temp sensor is 100% a charge temp sensor on the gotech loom. the fiesta turbo one has different resistance values so you cant use that.

Hobomassiv

Thats fair enough, im just going to have to leave it wedged in the side of a hose.

Any ideas onthe above though? Its got to be something simple.

Hobomassiv

Looking like im getting bore wash, ive been reading stuff all night and im having the symptoms. It would explain the cutting out and not starting again, like its laboured.

Any one care to confirm?

m.broster

when it left here it was running spot on, it then got sold to several other people since then who have by the looks of things "played with it". without seeing it its hard to say exactly what issues you have, chances are, as you say itll be a simple fix. is there no way of getting it up to jamsport?

Hobomassiv

Yeah i kinda guessed it had been fiddled with, because things like the air temp sensor just floating about in the bay! The person who i got it off of had 'one of his mates' do some of the oil seals like crank, so they probably put it back wrong.


Once ive sorted out some of the cosmetic bits that i can do, then it will more than likely be coming to Jamsport, i have means of transporting it if need be.


At the moment the interior is out, all the guages and dash is being changed, i cannot stand 'A' pillar mount guages becuse i cant see shit (it is a small car afterall) Normal seats going back in without harnesses. Sort out a few electrical bits. And sort out the smoky turbo.