acecraig

hi i have got myself a problem with my mi16 it splutters n misses when u hit the 3500k mark and there on, even worse when hot. when it gets hot normal running temp it start to lose oil pressure but oil pressure is fine until it starts to get hot i dont no if thes 2 problems are linked ?

i have checked my rotery arm dizzy cap leads plugs all my earth wires are good ignition amplifier is fine.

i thought mibby my coil pack going faulty at high revs is this possible or would it just be faulty all the time

as for lossing oil pressure when its hot i tried changing oil for thicker stuf but didnt realy make much difference

anybody have any sugestions?

anything?

as355f1

they do lose a little oil pressure when hot, try fuel pump/relay for you missfire and new plugs

Silver'Scort

Could be coil pack, in my experience a failing one will break down, (or at least be noticed more) when its under load, which at 3500 revs it will be. It will also be more noticable when it (the coil) gets hot.
As for loosing oil pressure when its hot, dont know tbh mate, sorry! Cant see how they would be related, unless the viscosity of the oil is to low so it goes p155 thin when its hot and bringing the light on? Not sure tbh but just a thought.

acecraig

ye they do loss oil pressure when there hot but i think mines losses to much as it sits at normal 3 bar then when hot it drops right down to about 0.5 of a bar and i no from a m8ts experience burst oil pipe no pressure means knackered big end bearings and i dont want that lol

cossie15

iTrader: (1)

try testing your air flow meter

acecraig

in what way could you test it?

acecraig

it has also got new plugs in it bosh 3 prong ones

as355f1

is it using oil ?

acecraig

not very much slightly if anything

carlos1395

i had one years ago and mine did the same it turned out to be the ignition module from memory it was about Ł35 from motor factors

Silver'Scort

Yeh you're right mate, theres no way it should be dropping 2.5 bar just when it gets hot, and yes no oil pressure means knackered everything, not just big ends eventually.

rstdave

iTrader: (3)

A mate of mine has an mi16 in his 205 and i have to say, your oil pressure is way below what it should be mate! His car holds brilliant oil pressure, 0.5 bar on that engine indicates it really does need investigating, engine out time i would say.

acecraig

new symptom noticed that the oil pressure guage is jumping all over the place now and again so im hoping its a faulty sensor or wiring and im not realy losing pressure. ill try it tomorow as i have a spare 1

acecraig

ignition module is that the same thing as the ignition amplifier or something different?

pee vee

I'd say your first port of call should be to replace and/or clean up the Earthing points on the engine this could well be the problem that is making the gauge jump... Mi16 should hold 4.4 bar of oil pressure at 4k rpm at 90deg IIRC


might well also help your running problems.

acecraig

i hav had a check of them there all conected but to make sure ill take them off tomorow clean them up and refit see how i get on with that

cheres pee vee

pee vee

pugs seem Very suseptable to bad earthing problems.. try cleaning the battery terminals, and basically make all earthing points (main one should be on top of the gearbox) are shiny and make good contact..

i made up a new earth strap for mine just to make sure too .lol


just another thought... any signs that the altenator might be on the way out??

what sorta set up is it running? standard proper managment? or 8v managment with a distributor? or is it on aftermarket stuff

acecraig

i am sure its a gti ecu that has been delimited and runs with a distributer.

now that u mention it this morning i noticed my battery light, light up slightly but i asumed it was because i had to give a jump start to a m8 but i had to take the battery out of the car to do so didnt realy think much of it. what were u thinking?

pee vee

well if you had the heater blower on , then the battery light will be on but quite dim
(a feature Gtis have )

but basically mine started playing up a little bit like that and it turned out to be the altenator on the way out.... not cheap!


Ps.. oil pressure ? lol

acecraig

ye i would of had the bloweres on but ill keep an eye on it any way im gona have a look at my earths etc tomorow

just another thought could my crack sensor be playing up ?

pee vee

hmmm wouldnt of thought so.. its more likely to be earths or a temp sensor.. possibly air flow meter... possibly the breather system all clogged up... possibly the vac pipe come off the fuel regulator... lots of things it could be really!

acecraig

is there any way of testing ur air flow meter?

broonie88

just bite the bullet ur cars a junker mate lol

pee vee

its in the haynes manual for them mate.
basically measure the resistance accross pins,

is your air flow meter a little thing. or a big one with the air filter attached to it?

acecraig

its a big one with the filter attatched

acecraig

whatever broonie at least mines is running urs has been sat in a garden for 9 months gathering mould lol

broonie88

she'll run soon enough lol...uv got mail

pee vee

you are running Mi16 managment then by the sound of it.
could well be the air flow meter then. . www.205gtidrivers.com

have a look on there mate, there will be some more ideas. assuming the timing is fine on the engine, then its just a matter of finding the wrong part.

acecraig

ill have a good look the morrow let u no how i get on with it all

cheers for all the advice pee vee

nugnah

look for a user on here called Spikey/Spiky , well into his 205 MI16 and shit hot on em mate.

jason