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Replaced Pcv And Now Car Wont Start


pinky

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I have fuel. Plugs smelled like fuel when pulled. Also had a shimmer of fuel on them

Checked spark on one of the plugs and it is strong. (week old cap,rotor,plug,plug wires)

I am pretty sure I have air, hehe. New filter a week ago.

Replaced vacuum lines when I did the PCV.

I pulled all plugs and letting them dry out. Might be flooded.

Looking for ideas to check.

Thank you very much.

-pinky

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Does it run then stall?

If so check your manifold, on the right side sometimes a little metal bracket that holds the PCV lines gets stuck between the block and manifold casuing a huge air leak. That was my problem when my car wouldnt start after I did my PCV.

Hope this helps.

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You said fuel, air and spark but you didn't say compression ... If it just cranks and cranks but doesn't catch at all, check lawn mower syndrome.

You have the plugs out anyway, drop just a little oil in each cylinder before you replace them. Only like a teaspoon, you need hardly any. Has happened to my 850 a couple times, last time was when doing the PCV. :huh:

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Thanks for the ideas.

The LMS sounds about right. After doing the pcv and replacing only the items needed to run the car I started the car, ran it for a 10 seconds. After realizing everything worked I shut her down and proceeded to replace the other little plastic things and cleaned up my tools.

Then no start.

I do not think it is a vacuum leak because it only cranks. There is zero combustion. Does not even sound/feel like fuel is igniting.

In the mean time my friend is letting me barrow his 525i BMW manual. hehe

-pinky

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Definitely not flooded. Pulled plugs and turned it over 4 times at 20 seconds each over a period of a few hours. Had fuel pump fuse pulled and fuel injector wiring unplugged.

Unfortunately I need my car working in a few days so I am towing it to my mechanic.

Any ideas are welcome.

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This seems to be a recurring issue. No start after PCV replacement. There is a lot involved in the replacement and I would first check everything I did to ensure I didn't leave any thing unplugged or pinched.

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by chance sis you plug the air mass back in? did you make sure that the intake air hoses were all in properly? have you tried removing the hoses and reinstalling them..??

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She runs! :)

No idea what did it. I just kept changing,checking, removing and putting things back. I turned the key and it started to run very crappy so I gave it some gas to make sure she stayed running. Kept it at 1500-2000rpm for 8-10 seconds and then let her idle. Let it idle for 20min or so while my friend and I poked and prodded at the engine bay. I then let her sit and cool down for over an hour and she started right back up. Went out for a test drive and she runs smooth.

Thanks for the help.

-pinky

I also fixed my skid plate.

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  • 4 weeks later...

I am having the same issue, sort of. Car starts fine, but after about 3 seconds idle goes to zero and it dies. If I give it gas, it runs at 2k rpms or above. I can hear a bad leak somewhere in the engine bay, but haven't located it yet (had to get up for work this morning). I thought I was careful to make sure I did not catch the bracket for the PCV hoses on the manifold, but now I will double check that. Also, one of the bolts securing the manifold to the engine was overtorqued and broke, but it was one of the ones in the middle, so does not seem to be of the utmost importance...?

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...

Also, one of the bolts securing the manifold to the engine was overtorqued and broke, but it was one of the ones in the middle, so does not seem to be of the utmost importance...?

Hmm, you have to do it right and redo it - drill that b!+ch out.

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I hope this happened to me =0

I did radiator hoses + t-stat + ECT and the back turbo coolant hose above the heat shield....

and after i sweated for 8 hours cause who knows when the last time this was done, and the fact i routed the lower one wrong and then realized after 40 minutes how dumb i was...

No start. It cranks, but won't catch.

It's on ramps in the front, and i have nearly a full tank of gas. I had it on maybe 2 minutes before i did this. I did not unplug the battery either.

Unfortunately i had to go back to school that night/morning, so i couldn't diagnose properly, but...i did try unplugging maf and starting and no go. ECT worked since the fan ran nonstop when i unplugged the ECT and turned on the car.

Next step will be to check fuel on friday when i get back and spark...but does anyone know what sensor i mighta hit in that area or if i spilled antifreeze on something? The car does NOT start up for a second then die...it just cranks..strongly for a battery i suspected was dying =p Will throw on the charger on friday as well. I knocked the EVAP purge valve (or w/e is by the intake manifold vacuum lines) hard line off and reattached it, and there was another hard line that i accidentally popped off the coupler, but again, put it back. Nothing else is unattached that i know of...but, if you've done lower radiator hose with the stock intercooler hoses, and you didn't completely remove them, just undid a few and took them out, its a PITA =p I only undid a few, but again, if it was intercooler hoses i should start, then die. I'm not getting that.

So im shooting in the dark here till friday, but, obviously am open to any ideas! I understand without telling you guys whether i have fuel or spark, this is no different then any other no-start thread so i accept all -1's ..but the car is 2 hours away until friday.

This is for the 1996 850R....first time i've ever had a no-start from the volvo's lol...idk the PO's work on it, but, it ran with 0 issues before i did all this(aside from an O2 sensor code..but i've got that under control :P ) for the past 8 months. I seafoamed last week with 0 issues as well i might add, and had driven about 10 miles afterwards with 0 issues aside from smoking up some stuff. Perhaps the plugs are fouled to hell ( but then how did i start to get up on the ramps with 0 issues?)

Sorry for thread jacking, but, i'm curious if by starting the car for that 2-3 minutes to get it up on the ramps, i somehow caused this? I didnt think LMS was relevant to turbo's...and i've never had that from my 93 , surprisingly

Oh and i have the MSD coil, i have new plug wires(IPD)..and yes, they are all plugged in tight(i will unplug them and plug back in on friday to be sure). Plugs i am unsure on, but again, no issues till now.

Did have to use an impact socket to get the thermostat bolts off, and i did NOT remove the fuel line, if that matters.

If i can get it running so i can get it off the ramps i'd appreciate it =p The good news is the 92 degree thermostat was in the car, and i put the 87 in. Here in florida, i feel much more comfortable knowing that...the gauge sat at 2:30, which has always made me nervous.

Anyways i'll probably post this in its own thread after friday with news on spark or fuel.

Thanks !

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...I'm curious if by starting the car for that 2-3 minutes to get it up on the ramps, i somehow caused this? I didnt think LMS was relevant to turbo's...and i've never had that from my 93 , surprisingly

LMS has nothing to do with the turbo, either model can get it just the same. LMS happens when you start the car but run it for just a short time. It gets turned off before the oil pump gets primed, so the pump doesn't deliver enough lubricant, cylinders go dry. Dry cylinders mean no compression. No compression no boom.

Only driving onto the ramps is classic situation for LMS, I'd start with adding oil in the cylinders it is so easy to check. Just don't put in more than a teaspoon, save yourself some smoky exhaust.

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