gutted! update
04-02-2010, 01:37 PM
#1
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gutted! update
just before xmas my wiring loom had loads of problems with melting wires and blowing fuses and things not working so over last 5 weeks ive slowly put a new loom in,new payen headgasket,new turbo etc.
got it all up and running,but its smoking quite bad so just did a comp test its got 90, 100, 125, 50 in the cylinders. and this bottom end has only done 3k miles
update,
ive just drove home from work with a mate folowing me and he dont reckon its rings as it ent smoking that much.car fires up 1st flick of the key aswell.but the car is quite flat to drive,does anyone think it could b a head problem?
got it all up and running,but its smoking quite bad so just did a comp test its got 90, 100, 125, 50 in the cylinders. and this bottom end has only done 3k miles
update,
ive just drove home from work with a mate folowing me and he dont reckon its rings as it ent smoking that much.car fires up 1st flick of the key aswell.but the car is quite flat to drive,does anyone think it could b a head problem?
Last edited by rickbartlett; 05-02-2010 at 04:28 PM.
04-02-2010, 02:29 PM
#5
just before xmas my wiring loom had loads of problems with melting wires and blowing fuses and things not working so over last 5 weeks ive slowly put a new loom in,new payen headgasket,new turbo etc.
got it all up and running,but its smoking quite bad so just did a comp test its got 90, 100, 125, 50 in the cylinders. and this bottom end has only done 3k miles
got it all up and running,but its smoking quite bad so just did a comp test its got 90, 100, 125, 50 in the cylinders. and this bottom end has only done 3k miles
WTF has happened to it, how did the rings get fried so quickly??Or is the head/block warped, or even the HG gone already, maybe cracked ring lands?
Feel for you mate!!
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04-02-2010, 05:50 PM
#8
May well be a top end issue mate, ie valves not seating properly.... Hope its not the bottom end mate!
The yanks are fond of blow by tests, this will tell you if the compression is being lost through the crank case (meaning rings (usually) have done a poo) where as a compression test will test the compression of each cylinder so could be a valve issue, head gasket etc etc.
Rob,
The yanks are fond of blow by tests, this will tell you if the compression is being lost through the crank case (meaning rings (usually) have done a poo) where as a compression test will test the compression of each cylinder so could be a valve issue, head gasket etc etc.
Rob,
05-02-2010, 06:24 AM
#10
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how do i do a blow by test? what does that involve.i had the valves relapped last week before head was fittedi think the head gasket is ok and i used new head bolts.it was smoking before i took it apart but i was convinced by many people that it was the turbo even tho it hardly had any play in the shaft.
as i said before the engine has done 3k miles but the last time it was in a car was 2003,then it got put in my car last year.unless sumat has happened to the rings while in storage?
ive been offered a fiesta turbo efi bottom end with rings gone.so may put new rings in that lump and swap it over.that way it will have the cps hole if i ever want to swap management.
will my clutch bolt strait on to it or are they different sizes?
as i said before the engine has done 3k miles but the last time it was in a car was 2003,then it got put in my car last year.unless sumat has happened to the rings while in storage?
ive been offered a fiesta turbo efi bottom end with rings gone.so may put new rings in that lump and swap it over.that way it will have the cps hole if i ever want to swap management.
will my clutch bolt strait on to it or are they different sizes?
05-02-2010, 07:36 AM
#11
If it was smoking before then my money is on the rings, if you had a couple of bent valves you would of thought that would have been noticed when lapping them in.
Blow by test meassures exactly what is getting past your rings by monitoring the crank case breathing using a blowby flow meter attached to the rocker cover.
You will of course need to know what a healthy engine should read to be able to compare the results, and I have no idea what they cost.
FRST Bottom end is a good move as you say with CPS ready for EFI at some point, just make sure you have the bores measured before splashing out on new rings (rule of thumb is that if you can feel any lip at the top of the bores then you need to go ovresize), also get the crank meassured and fit new big end and main shells whilst your at it! Yes the clutch will bolt straight on!
Blow by test meassures exactly what is getting past your rings by monitoring the crank case breathing using a blowby flow meter attached to the rocker cover.
You will of course need to know what a healthy engine should read to be able to compare the results, and I have no idea what they cost.
FRST Bottom end is a good move as you say with CPS ready for EFI at some point, just make sure you have the bores measured before splashing out on new rings (rule of thumb is that if you can feel any lip at the top of the bores then you need to go ovresize), also get the crank meassured and fit new big end and main shells whilst your at it! Yes the clutch will bolt straight on!
Last edited by Karlos G; 05-02-2010 at 07:44 AM.
05-02-2010, 04:28 PM
#12
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update,
ive just drove home from work with a mate folowing me and he dont reckon its rings as it ent smoking that much.car fires up 1st flick of the key aswell.but the car is quite flat to drive,does anyone think it could b a head problem?
ive just drove home from work with a mate folowing me and he dont reckon its rings as it ent smoking that much.car fires up 1st flick of the key aswell.but the car is quite flat to drive,does anyone think it could b a head problem?
05-02-2010, 04:30 PM
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05-02-2010, 04:31 PM
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ud have that it would have been noticed when my mate relapped the valves last week tho.dont know if its worth trying another head on it before rip the bottom end out???
05-02-2010, 05:44 PM
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try putting a squirt of oil down each cylinder then do a compression check with full throttle, if the readings don't go up then its possible valves/head gasket, if they do go up then rings as the oil seals them temporally
Last edited by as355f1; 05-02-2010 at 05:51 PM.
05-02-2010, 07:52 PM
#29
It Wasnt Me!
no wonder RST's get a bad name with 2nd hand engines/fitting new rings to probably a fucked engine to start with!
Do it once, do it right.....Always money to do it again but never enough to do it right
Do it once, do it right.....Always money to do it again but never enough to do it right
05-02-2010, 08:00 PM
#30
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07-02-2010, 07:15 AM
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goint to get a wet compression test done this week so i will know once and for all.
i actually did a normal compression test before i changed the headgasket and reground the valves in last week and got these figures 80 115 100 110
my tappets were shot so i changed them. and as said ,the most recent comp test figures were 90 100 125 50. im finding it really strange and its really got my thinking it could be the head after all.
it seems to smoke only occasionally and not under full throttle.anyone ever had same problem?
i actually did a normal compression test before i changed the headgasket and reground the valves in last week and got these figures 80 115 100 110
my tappets were shot so i changed them. and as said ,the most recent comp test figures were 90 100 125 50. im finding it really strange and its really got my thinking it could be the head after all.
it seems to smoke only occasionally and not under full throttle.anyone ever had same problem?
07-02-2010, 12:10 PM
#32
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i would hazard a guess with the black smoke you were getting that the engine is massively overfueling resulting in bore wash, did the bores look shiny when the head was off or could you still see the honing marks ?
07-02-2010, 01:06 PM
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to be honest mate i didnt notice,the bores felt ok,but i didnt have a good look as i didnt suspect anything would be wrong with bottom end as it has only done 3k miles
07-02-2010, 01:45 PM
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07-02-2010, 02:08 PM
#35
i dont know bout a blow by check, but the best thing i suggest is a CYLINDER LEAKAGE Test. this should tell you exactly where your losing compression without having to whip the head off!
its a very simple but effective test!
like a compression test, you have to fit an adaptor to the spark plug hole,
but instead of fitting a guage to it, you plug an airline to it! you must ENSURE that the cylinder that you are testing, the piston MUST BE AT T.D.C
otherwise the pressue from the airline will simply send the piston down!
at T.D.C the valves are shut and the con rod is dead straight / vertical, so the pressure will just sit in the combustion chamber! NOW all you do is listen for where you are losing pressure!
if you can FEEL / HEAR AIR coming out of the following:
Oil filler cap = Rings
Exhaust Pipe = Exhaust Valves
Inlet Manifold / Throttle = Inlet Valves
Header Tank = Headgasket
its a very simple but effective test!
like a compression test, you have to fit an adaptor to the spark plug hole,
but instead of fitting a guage to it, you plug an airline to it! you must ENSURE that the cylinder that you are testing, the piston MUST BE AT T.D.C
otherwise the pressue from the airline will simply send the piston down!
at T.D.C the valves are shut and the con rod is dead straight / vertical, so the pressure will just sit in the combustion chamber! NOW all you do is listen for where you are losing pressure!
if you can FEEL / HEAR AIR coming out of the following:
Oil filler cap = Rings
Exhaust Pipe = Exhaust Valves
Inlet Manifold / Throttle = Inlet Valves
Header Tank = Headgasket
Last edited by turboRS; 07-02-2010 at 02:33 PM.
07-02-2010, 03:43 PM
#36
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i dont know bout a blow by check, but the best thing i suggest is a CYLINDER LEAKAGE Test. this should tell you exactly where your losing compression without having to whip the head off!
its a very simple but effective test!
like a compression test, you have to fit an adaptor to the spark plug hole,
but instead of fitting a guage to it, you plug an airline to it! you must ENSURE that the cylinder that you are testing, the piston MUST BE AT T.D.C
otherwise the pressue from the airline will simply send the piston down!
at T.D.C the valves are shut and the con rod is dead straight / vertical, so the pressure will just sit in the combustion chamber! NOW all you do is listen for where you are losing pressure!
if you can FEEL / HEAR AIR coming out of the following:
Oil filler cap = Rings
Exhaust Pipe = Exhaust Valves
Inlet Manifold / Throttle = Inlet Valves
Header Tank = Headgasket
its a very simple but effective test!
like a compression test, you have to fit an adaptor to the spark plug hole,
but instead of fitting a guage to it, you plug an airline to it! you must ENSURE that the cylinder that you are testing, the piston MUST BE AT T.D.C
otherwise the pressue from the airline will simply send the piston down!
at T.D.C the valves are shut and the con rod is dead straight / vertical, so the pressure will just sit in the combustion chamber! NOW all you do is listen for where you are losing pressure!
if you can FEEL / HEAR AIR coming out of the following:
Oil filler cap = Rings
Exhaust Pipe = Exhaust Valves
Inlet Manifold / Throttle = Inlet Valves
Header Tank = Headgasket
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