crazy 4age noises

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crazy 4age noises

Postby johntramp » Sun Dec 10, 2006 1:34 am

hey I am trying to get this bigport 16v 4age running. i have spark and fuel but the engine wont run. I get these crazy plopping noises tho which are very strange. I will put some extractors on tomorrow but I don't know if is the problem.
here is a crap video taken tonight, but you can get an idea of what is happening
http://www.youtube.com/watch?v=snWmbCgSGKg

has anyone come across this before? it wouldn't be caused by having no back pressure from the exhaust would it?

Cheers
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Re: crazy 4age noises

Postby matt dunn » Sun Dec 10, 2006 3:16 am

johntramp wrote:
has anyone come across this before? it wouldn't be caused by having no back pressure from the exhaust would it?

Cheers


Doubt it as we have had 4AGE's running on std ECU no worries with just the first part of the manifold and no more.
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Postby Xyrath 86 » Sun Dec 10, 2006 7:30 am

Check your cam gears are on the cam shafts the right way.
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Postby johntramp » Sun Dec 10, 2006 9:23 am

Xyrath 86 wrote:Check your cam gears are on the cam shafts the right way.
ok, I dont know why they would have ever been taken off but i will check that. what would that prove? excuse my ignorance, but arent they just round?

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Re: crazy 4age noises

Postby johntramp » Sun Dec 10, 2006 9:27 am

matt dunn wrote:Doubt it as we have had 4AGE's running on std ECU no worries with just the first part of the manifold and no more.
ok. btw, this is standard ecu too.
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Postby RedMist » Sun Dec 10, 2006 9:28 am

johntramp wrote:
Xyrath 86 wrote:Check your cam gears are on the cam shafts the right way.
ok, I dont know why they would have ever been taken off but i will check that. what would that prove? excuse my ignorance, but arent they just round?

cheers


He's talking about cam timing. Ensure the timing marks on the cam gears align correctly. The other possibility is that if you have had the dizzy out it may be a tooth or more out. You'll want to check ign timing.
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Postby Chickenman » Sun Dec 10, 2006 9:29 am

check your leads are on the right plugs, check your distributor timing, check your cam timing.

My brother had the same thing... leads out of order.
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Postby johntramp » Sun Dec 10, 2006 9:38 am

i have checked the fire order is right. I will check the timing

so what would the noises be? something to do with the valves opening at the wrong time???
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Postby RedMist » Sun Dec 10, 2006 10:10 am

Where are those flames coming from? The video is so dark I cant even tell the engine orentiation.

As stated still looks to be either cam timing or more likely ign timing.
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Postby johntramp » Sun Dec 10, 2006 11:50 am

it is RWD, looking from the front left guard... sorry about the video quality, but it is more the sound that I was wanting to show as there isn't much to see
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Postby Xyrath 86 » Sun Dec 10, 2006 11:52 am

RedMist wrote:He's talking about cam timing. Ensure the timing marks on the cam gears align correctly. The other possibility is that if you have had the dizzy out it may be a tooth or more out. You'll want to check ign timing.


Nah I actually meant make sure the cam gears are on the shafts the correct way. I once had a 4age with the inlet cam gear 180degrees out so that when it was timed up to the correct timing marks the camshaft was out by 180degrees and it sounded exactly the same and had flames out the exhaust like that. Wouldn't be the same problem if you haven't had the cam gears off tho.
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Postby l1ttle_d3vil » Sun Dec 10, 2006 6:50 pm

yep it definitely sounds like the timing. make sure that is all sweet, and if it still doesnt go chuck some extractors on. that sounds really simlar to my engine when I tried starting it with no exhaust manifold at all on...and it wouldnt really run properly iirc.
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Postby johntramp » Sun Dec 10, 2006 11:51 pm

yeah it was the timing, runs well now. cheers
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