Running rough after a rebuild - includes video
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Running rough after a rebuild - includes video
Hi,
I rebuilt the top end of my mr2 and painted all the bits, added a new intercooler, downpipe and exhaust.
I also put in new spark plugs, new oil filter, new fuel filter, new rotor arm and cap.
I started it up and it sounded fine for a few seconds then died, now it starts and sounds horrible... see video.
The spark plugs are wet and have a black ness to them... i cleaned them and took one out after only doing this video and they were wet again.
I also took the whole thing apart and redid all the jubilee's etc to make sure there is no air gap.
you can see the video here:
http://www.youtube.com/watch?v=pjTOY1no_vM
It was running fine before I did this, except an overheating issue which was the thermostat.. I put a new one in.
It runs... just don't know what the hell is causing the issue.
I'm thinking about taking the fuel rail off, but the fact it is wet means it must be getting enough fuel.
Also, all the spark plugs are wet so it's not like the head gasket has gone as 1 would be worse.
I'm open to ideas.
I rebuilt the top end of my mr2 and painted all the bits, added a new intercooler, downpipe and exhaust.
I also put in new spark plugs, new oil filter, new fuel filter, new rotor arm and cap.
I started it up and it sounded fine for a few seconds then died, now it starts and sounds horrible... see video.
The spark plugs are wet and have a black ness to them... i cleaned them and took one out after only doing this video and they were wet again.
I also took the whole thing apart and redid all the jubilee's etc to make sure there is no air gap.
you can see the video here:
http://www.youtube.com/watch?v=pjTOY1no_vM
It was running fine before I did this, except an overheating issue which was the thermostat.. I put a new one in.
It runs... just don't know what the hell is causing the issue.
I'm thinking about taking the fuel rail off, but the fact it is wet means it must be getting enough fuel.
Also, all the spark plugs are wet so it's not like the head gasket has gone as 1 would be worse.
I'm open to ideas.
Re: Running rough after a rebuild - includes video
well if all the spark plugs are wet with fuel then each cylinder is getting fuel. To me it means that the fuel isnt burning properly, ie: spark related.
id pull the efi fuse and pull each plug out one by one and check for a spark on each one
are the HT's on properly, the rotor arm fitted correctly?
if not it could be something coincidental such as the coil pack on its last legs
it could also be a bad batch of new spark plugs, id try the old ones to eliminate (ive had that before)
id pull the efi fuse and pull each plug out one by one and check for a spark on each one
are the HT's on properly, the rotor arm fitted correctly?
if not it could be something coincidental such as the coil pack on its last legs
it could also be a bad batch of new spark plugs, id try the old ones to eliminate (ive had that before)
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Re: Running rough after a rebuild - includes video
Makes sense.
I assume so.
I made sure I didn't put them on the wrong way, doing 1 by 1 etc...
Maybe I did.
Need to find a pic of which cap port goes to which cylinder so I can check.
I'll get a pic, re do the rotor arm and check spark.
Where is the EFI fuse?
I assume so.
I made sure I didn't put them on the wrong way, doing 1 by 1 etc...
Maybe I did.
Need to find a pic of which cap port goes to which cylinder so I can check.
I'll get a pic, re do the rotor arm and check spark.
Where is the EFI fuse?
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Re: Running rough after a rebuild - includes video
-correct spark plug gap?
-Leads in the correct order?
-When you say rebuilt the top end did you have the head off? If so Cambelt all lined up and head torqued down properly?
-Did you paint the head cam cover? If so you didnt shot blast the old paint off did you?
-Leads in the correct order?
-When you say rebuilt the top end did you have the head off? If so Cambelt all lined up and head torqued down properly?
-Did you paint the head cam cover? If so you didnt shot blast the old paint off did you?
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Re: Running rough after a rebuild - includes video
Steve-O 2007 wrote:-correct spark plug gap?
-Leads in the correct order?
-When you say rebuilt the top end did you have the head off? If so Cambelt all lined up and head torqued down properly?
-Did you paint the head cam cover? If so you didnt shot blast the old paint off did you?
-correct spark plug gap? yes, i did this
-Leads in the correct order? gonna check now
-When you say rebuilt the top end did you have the head off? If so Cambelt all lined up and head torqued down properly? No, i din't touch the head
-Did you paint the head cam cover? If so you didnt shot blast the old paint off did you? Didn't shot blast, just a rub down and rattle can respray
Re: Running rough after a rebuild - includes video
just to clarify
cylinder 1 is nearest the cambelt end, cylinder 4 nearest the gearbox . have you put the leads on the wrong way, counting left to right - 1-4
cylinder 1 is nearest the cambelt end, cylinder 4 nearest the gearbox . have you put the leads on the wrong way, counting left to right - 1-4
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Re: Running rough after a rebuild - includes video
im going with spark plug leads in wrong order
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Re: Running rough after a rebuild - includes video
rev3turbo wrote:just to clarify
cylinder 1 is nearest the cambelt end, cylinder 4 nearest the gearbox . have you put the leads on the wrong way, counting left to right - 1-4
I just checked against 4-5 photos..
Going clockwise from top left on the cap...
1-2-4-3 (using your method of 1-4 as right to left)
4-3-1-2 if you count the cylinders left to right.
Strage thing is the cap has markings on it 1-4 that don't add up with the correct order. Bit odd that. I tried it anyway and it didn't fire at all.
Last edited by moscoworbust on Sun Mar 10, 2013 3:49 pm, edited 1 time in total.
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- Posts: 443
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- Location: Guildford
Re: Running rough after a rebuild - includes video
wait a minute... the cap has markings on it.. but i assumed it was 1-4, lwft to right. Maybe if I follow the markings on the cap but go 1-4, right to left it may work.
I'll try after I finished this sandwich.
1-4 right to left, bit odd.
I'll try after I finished this sandwich.
1-4 right to left, bit odd.
Re: Running rough after a rebuild - includes video
its 1 to 4 right to left because essentially you are looking at the engine from behind (mid engined car)
if you was to look at the same engine in a front engined car, celica... it would be 1-4 left to right.
if you was to look at the same engine in a front engined car, celica... it would be 1-4 left to right.
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Re: Running rough after a rebuild - includes video
my cap has the 1-2-3-4 markings and spark plug 1 goes to No1 and so on.
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Re: Running rough after a rebuild - includes video
rev3turbo wrote:its 1 to 4 right to left because essentially you are looking at the engine from behind (mid engined car)
if you was to look at the same engine in a front engined car, celica... it would be 1-4 left to right.
ah yeah... makes sense.
Refuelling completed... I'm heading back out.
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Re: Running rough after a rebuild - includes video
Well, I'm certain HT leads in the right order.
Following 1-4, right toi left, they even match up with the marks on the cap.
I pulled each plug and there is a spark. It's pretty weak though, very weak. It's orange, not a shard blue spark.
Maybe the gaps are too small?
Following 1-4, right toi left, they even match up with the marks on the cap.
I pulled each plug and there is a spark. It's pretty weak though, very weak. It's orange, not a shard blue spark.
Maybe the gaps are too small?
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Re: Running rough after a rebuild - includes video
I fitted NGK 6097's ( as recommened by several websites)
And gappped them to 0.028".
I guess it's the coil pack or HT leads.
And gappped them to 0.028".
I guess it's the coil pack or HT leads.
Re: Running rough after a rebuild - includes video
Hi,
Do you have an afm?
Have you unplugged that for any reason?
Mine over fuelled badly when it broke and sounded just like that, easy way to find out if it, just unplug it while the car is running.
Adam
Do you have an afm?
Have you unplugged that for any reason?
Mine over fuelled badly when it broke and sounded just like that, easy way to find out if it, just unplug it while the car is running.
Adam
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Re: Running rough after a rebuild - includes video
yes it's a rev 1.
I didn't touch it.
I guess I can try.
You mean pull out the connector?
note. coil pack is a pain to get out. I think there is a bolt each side. but can't get a spanner or socket on either.
I didn't touch it.
I guess I can try.
You mean pull out the connector?
note. coil pack is a pain to get out. I think there is a bolt each side. but can't get a spanner or socket on either.
Re: Running rough after a rebuild - includes video
Hi,
Yeah just pull it out, mine was seriously over fuelling and sounded just like yours, unplugged the afm and ran fine, luckily I had a spare one to fit.
Ran perfect again after fitting it.
Adam
Yeah just pull it out, mine was seriously over fuelling and sounded just like yours, unplugged the afm and ran fine, luckily I had a spare one to fit.
Ran perfect again after fitting it.
Adam
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Re: Running rough after a rebuild - includes video
adam1989 wrote:Hi,
Yeah just pull it out, mine was seriously over fuelling and sounded just like yours, unplugged the afm and ran fine, luckily I had a spare one to fit.
Ran perfect again after fitting it.
Adam
ok cheers.
I'll try it tomorrow with more light.
Not sure how the AFM would of broken during all this though.
Still doesn't cover my weak spark issue.
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Re: Running rough after a rebuild - includes video
moscoworbust wrote:I fitted NGK 6097's
NGK BKR7E is what you want is that the same as 6097??