White smokey fuelly delayed start

[Coasty]

Guessing a bad/leaky injector. Cold start takes about 10 seconds, once its warm it fires immediately. She has about 265k miles with original injectors. Here is the VCDS data:

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[KLXD]

I'm guessing late timing or an air leak.

New problem? Always been this way? Just bought the car?

 

[Coasty]

I've had the car for 12 years now, always has started right up. just did a total vacuum line replacement and replaced the G81 sensor (fuel temp) because I was getting a code for that. The only other intermittent code I get is this:

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[Nero Morg]

How's your intake manifold? You clean it recently?

 

[Coasty]

I had it open a long time ago, probably been too long...

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[Coasty]

You think a clogging intake would give me these types of starts? I was a little concerned with the #4, seems the most off from the other cylinders

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[WildChild80]

Did you replace the seals on top of the pump?

Are you seeing big air bubbles in the return line upon start-up?

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[Coasty]

I did replace the top gasket, no bubbles. By the way I had the starting issue before doing the G81, I was hoping that would've been the fix.

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[WildChild80]

When you say cold, what does that mean? Florida folks think 60 is cold, some Canadians go for a picnic when it hits 32 degrees Fahrenheit.

And what's your IQ read when the car is warm?

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[Nero Morg]

A restricted intake doesn't usually cause a hard start, but it could. Just pull off the elbow to the egr valve and look inside.

 

[Tdijarhead]

If it’s the first start of the day, I’d say air getting in the fuel line. Those numbers don’t look that bad.

 

[Coasty]

So not necessarily cold start, but first start. The temps range from 30deg F to 70deg F lately, (I'm in DC) I have a new "t" for my next fuel filter change, ill get that in there and see if it makes a difference.

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[Coasty]

IQ when its warm is about 3.2

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[Nero Morg]

Do you have the clear fuel lines for your supply/return to the filter?

 

[Coasty]

I have the stock clear supply, black return. I've been meaning to replace them with both clear.

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[WildChild80]

Where is your injection timing? Pic of the graph. When my timing was off it'd start great cold but when warm it felt like it tried to run backwards...

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[Coasty]

still need to remember to plug in vcds and check timing... I keep remembering right as I get into bed. I did notice some soda bubbles in the clear line today, so I changed the filter and tee. We'll see how she starts in the morning.

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[Coasty]

so it didn't start any easier this morning, and i still have bubbles.., plug in vcds and i have this for timing

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[Coasty]

adjusted here. bubbles are bigger, my lines may be hosed... ha. we'll see how she starts in the morning

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[WildChild80]

Did it start doing this shortly after a timing belt change? How certain are you of the cam timing?

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[Coasty]

the timing belt was last done at 180k mi, I'm at 262k mi now...

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[WildChild80]

the timing belt was last done at 180k mi, I'm at 262k mi now...

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When did this start?

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[Coasty]

It started hard starting about 6 months ago. No specific maintenance was done to trigger it, I think it came on gradually.

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[BobnOH]

Smoke and excess bubbles could both be from the extended crank/no start.
I would;
1. Inspect timing belt
2. Time the motor (crank,cam,IP) pump hole should be close
3. Fine tune to center of graph using VCDS, optional-use adaptation to advance timing
If I read right, you're about due for the timing belt system, no awards for getting the full 100k.

 

[WildChild80]

Bob, you got a good point. Might be time to lay up and stay out of the bunker... timing belt might fix it if done properly.

Have you also thought about a compression test just to see what the holes are making

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[Coasty]

so it started much easier today, but still slightly delayed and still smokey, although less so. I think at this point its acceptable. I do realize I am due for a t-belt. when I adjusted the timing last night the belt did look ok, no cracking or shiny spots. I think I am going to try to wait on that project until after the summer. I do think my rubber fuel lines need replacing, lots of cracking. I no longer have the soda bubbles. since doing the filter and thermostatic T, I have a 1" long bubble that forms in there.

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[Coasty]

I do want to check the compression with a gauge, but I did the audible check and the cranking sounds consistent, no speeding up or slowing down

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[csstevej]

I don’t think you have a compression issue unless you have had something recently happen, IE gone through a deep water puddle ETC.
Your still getting air in there if you’re getting a 1” bubble.
Try using Vaseline on the t fitting, be generous , see if that helps.
If not there than possibly the head seal on IP is allowing air in when it’s off.

 

[WildChild80]

My tuned car has had a bubble for close to 100k miles...I chased it for a while replacing almost everything in the fuel line...gave up...car runs fine

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