How I didn't break my 4th gen

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Mon May 07, 2018 9:02 pm

Don't normally have a problem with the fronts, the rears can be a pita though when brand new. When I'm in that situation I normally use the handbrake loads while driving to the mot place, to try and get them to bed in and take a spanner with me to adjust the handbrake again when I arrive.

firstlude · Post by **firstlude** » Mon May 07, 2018 9:19 pm

i no what your saying wurly cant really drive the car far being its not taxed moted or insured , but did drive it around abit on the ind est as the road into the estate is a dead end private one , as for using brakes on way to mot the place i use is on same ind est so its only about a 500 yard drive

so fingers crossed will see if i can get a mot slot later this week

firstlude · Post by **firstlude** » Thu May 10, 2018 7:37 pm

today was mot day and guess what yep it failed

but only on emissions and it only just failed that , max co of .300 and it was .488 on first fast idle then .359 on second fast idle , but would not reduce enough for a pass so my question is how can i reduce the emissions that little bit for a pass ...

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Thu May 10, 2018 7:49 pm

Did the mot place not offer any advice?

Questions;
Has it got a cat fitted?
What exhaust is fitted? (is it oem or after market/larger)?
Has the exhaust got any leaks?
Has it got an oem or after market air filter?
Is the air filter clean?
Was the engine warm and was it idling at correct revs?

firstlude · Post by **firstlude** » Thu May 10, 2018 7:59 pm

to be honest i didnt really have time to chat to them as i dropped in on my way past as i was off to a breakdown, time i got back they was shut , in answer to your questions ....
yes it has a cat
exhaust is oem with some after market back box
they have advised an exhaust leak so will need to check this out
removed after market filter and fitted oem with new filter
engine was up to temp and idles fine
result of natural idle test was .111 with max limit of .500

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Thu May 10, 2018 8:09 pm

Ok, so first stop is to fix the exhaust leak - that will be causing incorrect lambda readings.

firstlude · Post by **firstlude** » Thu May 10, 2018 8:22 pm

yeah thats my plan for weekend sort exhaust i did save the exhaust i took off my other lude when i fitted the stainless one so if needs be i can put that on , they also advised a rollbar bush so will replace both sides least then all advisories will be done ..

firstlude · Post by **firstlude** » Sat May 12, 2018 8:48 pm

well checked the exhaust and sure enough its broken right on the flexi part of the downpipe so new downpipe needed , kinda hoping this will sort the emissions out

Post by **Drax** » Sun May 13, 2018 8:41 am

Won't fitting new spark plugs help the emmisions? I'm pretty sure that's what I've had to do once or twice in the past

Post by **NafemanNathan** » Sun May 13, 2018 9:45 am

Also clean out the EGR value if it's got one and you haven’t already cleaned it.