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slight miss/surge under load. 

 

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 Post subject: slight miss/surge under load.
Posted: Fri Jun 17, 2011 5:56 pm 
Getting Side Ways
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Age: 26

Posts: 1109

Joined: 4th Sep 2009

Ride: 92 EB s

Location: DORRIGO
NSW, Australia

I have a problem.
Car sitting at idle is pretty well right. 750rpm.
But as soon as you give it a little gas and try to sit at
For example 1200rpm in neutral the engine misses and seems to hunt a few hundred rpm, not severly tho.
I think its a ignition miss. Has new leads, plugs and cap is good. Could a crook coil give a miss.
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 Post subject: Re: slight miss/surge under load.
Posted: Sat Jun 18, 2011 4:00 am 
Tyre Shredder
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Posts: 326

Joined: 12th Jun 2010

Ride: EL Fairmont

Location: Central Highlands
QLD, Australia

87SIlude wrote:
I have a problem.
Car sitting at idle is pretty well right. 750rpm.
But as soon as you give it a little gas and try to sit at
For example 1200rpm in neutral the engine misses and seems to hunt a few hundred rpm, not severly tho.
I think its a ignition miss. Has new leads, plugs and cap is good. Could a crook coil give a miss.


What you describe sounds like a fuel issue, start with your fuel filter first....

 

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 Post subject: Re: slight miss/surge under load.
Posted: Sat Jun 18, 2011 10:23 am 
Getting Side Ways
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Age: 26

Posts: 1109

Joined: 4th Sep 2009

Ride: 92 EB s

Location: DORRIGO
NSW, Australia

You know I was thinking the same thing. Dunno what changed my mind tho.
My fuel filter is fairly neew. Sub 6 months.
Altho my fuel pump is humming a lovely song to me all the time. Possible that the fuel pump on the way out would cause something like this?
I have driven it at a quarter tank and below quite a lot when I was poorer and didn't know about the dry pump problem.
I've sonic cleaned the injectors about 2 months ago, ones ticking still tho...?
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 Post subject: Re: slight miss/surge under load.
Posted: Sat Jun 18, 2011 12:33 pm 
Getting Side Ways
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Age: 26

Posts: 1109

Joined: 4th Sep 2009

Ride: 92 EB s

Location: DORRIGO
NSW, Australia

Well. Had a propper look and found the return line on the rail was leaking due to a cracked line.
Also injector 5 had sweet f all pulse, the injector had pulled off the retaining clip and moved into the manifold. So it was leaking around the rail there aswell.
Fixed the surge and explains why I was getting 50-70 ks less per tank.
Thanks
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