I have an E30 that has a quirky problem slightly similar to this after it sits for 15-20 minutes only (no longer...no shorter). I'm convinced it's injectors weeping fuel into the cylinders, and full throttle opens up the intake enough for extra air to mix with the excess fuel that's pooled. I'll fix it when it starts to thin out my opil too much or happens daily. Until then...I'm too cheap/lazy to replace all 6 injectors. So...what I'm saying is: make sure your cold start valve isn't sticking ON and adding too much fuel as well as worrying about fuel starvation. Does it behave this way after it's fully warmed up as well? If it smooths out warm - time to learn about warm up regulators and adjust accordingly! I'm a DCOE guy (yeah yeah...FI is elegant and efficient yadda yadda) , but there are several of tii dudes (and dude-ettes) that can help you through it on line here.

Paul Wegweiser

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Description:	..and Jim...let's see that V-Dub! This motor I built for an orig. owner Ghia! (original owner cars are special and deserve extra love)
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jgerock wrote:

Clogged pickup screen inside the tank? or the tiny mesh filter just before the pump? or the fuel filter on radiator support? or the mesh filter at the K-F pump inlet?

Try all basics before you start with the more complicated items such as the KF.
The suddeness of the issue makes me think that it's the fuel filter. When was the last time you changed it??
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Colin K.
Malaga '72 tii

I changed the fuel filter on the radiator not too long ago, probably less than 500 miles on it.

The problem was really repetitive and consistent. It would do the 20 second run fine, then run crappy for a few seconds. I could almost put a timer to the cycle. It also came on all of a sudden.

I will try those suggestions.

Thank you,
Jared
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Jared
www.DrivingWhileAwesome.com
'72 tii
'00 Tacoma PreRunner

have you checked the fuel pump?
When my fuel pump went out it, it the output of the pump decreased significantly but the pump continued to run. The car would run fine for a while, then it would bog down and almost die (due to insufficient gas) and then pick back up. It was an intermintent thing. I can remember the specifics for the PSI/BAR that the pump is supposed to deliver.

In the meantime I had gone through the entire fuel system, cleaned the fuel pick up, each of the inline mesh filters and drained/refilled the gas tank.

Have you eliminated an ingition issue??
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Colin K.
Malaga '72 tii

that sounds exactly like the problem. I will check that out.
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Jared
www.DrivingWhileAwesome.com
'72 tii
'00 Tacoma PreRunner

Ok Paul - here are two pics.

Sorry to hijack. Please keep us posted on your tii fuel starvation issues.
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Jim Gerock
BMWCCA # 381868
73tii "Celeste" # 2764081
71 VW Cal-look Bug

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Description:	Almost everything is new here with many parts sourced from Gene Berg. Engine runs cool, is very reliable and fast even with 6.9:1 CR.
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Description:	I've owned this since April 1993. I did everything except the paint job. Old pic here before I installed a narrowed front beam and new sway bar.
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