Help please, hesatation..

[Sandham]

Hi ive been strugling with a misfire and some hesatation for some time now, running a td04 under fuel cut at stock fuel pressure.. So far ive changed the plugs, fitted trd leads, a brand new oem king lead, new dizzy cap and a new rotor arm. However im still experiencing the problem. Its very random and intermittent and seems to go when at very small amounts of throttle or wide open throttle :/

Im struggling for ideas now and would really appreciate some help

[5e colin]

hey sandham check your plug gap first if there grand check for water consumption ( fucked headgasked )

seeing u changed the rest for new that eliminates that

i had this to before long ago and changed evry thing and it was still there in the end i was leaking water in mi cylinders !!!

[Sandham]

Plugs are gapped to 1.1mm from the box, do you think it would be worth dropping the gap a slight amount?

[5e colin]

sure i run 0.8mm gap at a bar !!!!

the bigger the gap the more chance of spark blow out resulting in a mis !!!

let me know how u get on wit a smaller gap

[Sandham]

Im gonna have a sniff test done tomorrow for peace of mind and will also drop my gap to 0.9

[Sandham]

Passed a sniff test this afternoon so thats crossed off. Will try my coil next

[dangeestarlet]

I have a coil £10 posted

[Sandham]

You got paypal mate? And does it deffo work?

[5e colin]

thats great that it passed the sniffer test

if the coil dont solve it then the only thing i can think of is that you have a sparkplug seal leak and oil dripping in there cousin a misfire ???????

[dangeestarlet]

Yes works fine mate, what one you after as there's 2 screwed together, coil or ignitor?

[Sandham]

Ive reduced the gap to 0.9 and its helped abit but still just some slight hesitation occasionaly. I did notice one of my spark plugs had a tiny amount of oil on the top half so maybe its that? It never crossed my mind to be honest

Also id be after both parts mate because i dont know which is at fault

Edited March 19, 2014 by Sandham

[dangeestarlet]

Ok mate are yours clip type leads or boot type?

[5e colin]

ha sure kid if there is a bit of oil on it the spark will jump cousing a miss give it a good clean 2morow and check again

[Sandham]

Clip type pal. And will do mate, ill keep the thread updated.. Really appreciate the help

[Sandham]

Had a compression test done and readings were good.. Still searching for a coil to see if that solves it!

[4efteboost]

i would give your ignition timing a check

[Sandham]

How do i do this mate?

[4efteboost]

you need a timing light like this.. http://www.eurocarparts.com/ecp/p/tools/car-service-tools/diagnostic-tools/timing-lights/?SEATL85&0&t5_401

would be better if you could find a friend or a local garage to take a look though. 5 min job really

[4efteboost]

http://www.toyotagtturbo.com/forums/showthread.php?41744-how-to-set-timing-*