3.5 V8 Rebuild

discomark10 · Dec 31, 2013

yea that's pretty much what I've been doing.
I've thrown the bottle now, cant check.. but pretty sure it said for 1k

discomark10 · Apr 24, 2014

I wonder if anyone knows what this problem might be down to...

Recently she's become a bit of a pig to start.. seems to not want to start and ends up flooding.

It does something strange though, when your cranking it does go to splutter/try to start but it 9 times out of 10 actually start AFTER you let go of the key after cranking some.

it also dies when you let it idle sometimes.

To me this sounds like either timing... which I'm pretty sure is sweet, or fuel map related.. so a sensor of some sort.

Before I took her up to the lake district I thought I had killed the ecu as no matter what I did I couldn't start it. So out of desperation I got a 3.9 ecu from ebay which wouldn't work.
Ended up borrowing an identical one from a mate and got her going. After it started I reconnected mine and it worked but still flooded when trying to start, after the trip it worked flawlessly for a while but is doing it again.

Dr_evil · Apr 24, 2014

coil or ign module on the way out ?

discomark10 · Apr 24, 2014

Dr_evil said:
coil or ign module on the way out ?

I did think about coil.. you think like a poor spark?

I do have a spare ignition module from when I was trying to get rid of the misfire.

Dr_evil · Apr 24, 2014

Worth a try if it's not over fuelling and drowning the plugs randomly

Mr Noisy · Apr 24, 2014

Give it some extra voltage with a jump start, or connect starter to a different battery, if it fires when you stop cranking it could be voltage ie weak component further down the line

discomark10 · Apr 24, 2014

Mr Noisy said:
Give it some extra voltage with a jump start, or connect starter to a different battery, if it fires when you stop cranking it could be voltage ie weak component further down the line

I like the idea about using a different battery to start!
Might have to do that!
Ill try connecting the 2nd battery up to give it some extra grunt and see how that goes 1st.

fett · Apr 24, 2014

yeah doc got his v8 running with 9 other batterys, erm no hang on a mo he never did

Mr Noisy · Apr 24, 2014

how many engines now doc?

Dr_evil · Apr 24, 2014

Mr Noisy said:
how many engines now doc?

None

just some leftovers!

discomark10 · Apr 26, 2014

Tired jumping it today.. still not happy, cranked over very nicely mind

Dr_evil · Apr 26, 2014

Carb it

Holley 350cfm or a 300 and you'll have a nice engine!

jai_landrover · Apr 26, 2014

If you love Tarmac or soft off-road fit a Holley!

There is something obviously wrong

Mark u at Brickhill tomorrow

jai_landrover · Apr 26, 2014

Dr_evil said:
Carb it Holley 350cfm or a 300 and you'll have a mixture of some expensive parts, some old and a crazy idea that one day it will work. Then realise and sell it!.

Edited for accuracy

discomark10 · Apr 26, 2014

jai_landrover said:
If you love Tarmac or soft off-road fit a Holley!

There is something obviously wrong

Mark u at Brickhill tomorrow

Yes sir! What about yourself?

discomark10 · Apr 26, 2014

jai_landrover said:
Edited for accuracy

Snigger..

zen · Apr 26, 2014

discomark10 said:
I wonder if anyone knows what this problem might be down to...

Recently she's become a bit of a pig to start.. seems to not want to start and ends up flooding.

It does something strange though, when your cranking it does go to splutter/try to start but it 9 times out of 10 actually start AFTER you let go of the key after cranking some.

it also dies when you let it idle sometimes.

To me this sounds like either timing... which I'm pretty sure is sweet, or fuel map related.. so a sensor of some sort.

Before I took her up to the lake district I thought I had killed the ecu as no matter what I did I couldn't start it. So out of desperation I got a 3.9 ecu from ebay which wouldn't work.
Ended up borrowing an identical one from a mate and got her going. After it started I reconnected mine and it worked but still flooded when trying to start, after the trip it worked flawlessly for a while but is doing it again.

not enough cranking volts..ie coil being starved..if was old school dizzy would say resistive/normal wire from starter to coil breaking down/or starter coil feed ####ed etc....hense once cranking stopped engine still spinning over (inertia)but full voltage now available to coil..

though aload of other things it could be too...

discomark10 · Apr 26, 2014

Cheers zen. Question. . Would that also cause it to die?
when I ran it today it idles fine for ages but comming off the revs it tries to die unless you help it for a second.

as far as I can remember this idle dieing also started around the starting problem.

Its not down on power that I can notice, what about afm?.

discomark10 · Apr 27, 2014

Did the old cutting out for a second today.. one of the guys in the club said all my symptoms are classic of a failing coil!

Another member has one for sale, gona try that out.

discomark10 · Jun 19, 2014

So my water pump belt tensioner has been gradually getting louder and louder.
Rather than pay an extortionate amount for a new one I'll repair it.
went to a company called Beeline bearing with the old one which I pressed out of the pulley and bracket.
got one which was larger than the original 15mm ID and 30mm OD.
Made a new shaft from an off cut of 1" bar I had left over from the tow bar pin I made.
Turned it to size and also enlarged the pulley bore and hey presto.. one lovely pulley.

3.5 V8 Rebuild

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