[RobertDIY]

Hi, my first question, thanks for having me here.

This V8 motor that I'm working on, trying to troubleshoot this misfire on #2, sits sideways in the compartment. Can someone tell me where #2 is? I'm clueless on the layout of this engine.

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Also, do these NorthStar engines burn valves?

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Do these NorthStar engines burn valves?

 

[Byrdman]

Re: 2001 Cadilac DeVille has a P0302 error code.

Plenty of tech peeps here to help you, but you need to have a thick skin and not be offended by blunt replies.

 

[basscatt]

Re: 2001 Cadilac DeVille has a P0302 error code.

Hi, my first question, thanks for having me here.

This V8 motor that I'm working on, trying to troubleshoot this misfire on #2, sits sideways in the compartment. Can someone tell me where #2 is? I'm clueless on the layout of this engine.

----------

Also, do these NorthStar engines burn valves?

----------

Do these NorthStar engines burn valves?

=============================
Can someone tell me where #2 is?
it would be my pleasure to assist you -

1-3-5-7

2-4-6-8
front

Also, do these NorthStar engines burn valves?
anything is possible - but it would be rare -

most common cause for a misfire is from faulty ignition -

pull and inspect the plug -
if fouled -
inspect the boot for carbon tracking -

a failed ignition cassette is not uncommon -


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Plenty of tech peeps here to help you, but you need to have a thick skin and not be offended by blunt replies.

===========================
you need to have a thick skin
and not be offended by blunt replies
I can't imagine WHAT you mean by this - :hmm::noidea:

 

[Submariner409]

Re: 2001 Cadilac DeVille has a P0302 error code.

Welcome Aboard !!! Here's the layout for the left (front) cylinder bank ignition system. The right (rear) bank is identical except that you must carefully remove the AIR distribution valve from the valve cover bracket and remove the two 10mm nuts on the flange at the exhaust manifold.

Many more diagrams and pictures of your engine in my albums. Click my username, open the profile. Left column, 2 albums 6 pages of stuff. (The 2000 - 2004 Northstars are basically identical except for car model installation requirements.)

I suggest that you read the entire Cadillac Technical Archive way up ^^^ in the top black bar. Always read through the sticky posts at the top of the threads page of any forum of interest. Learn to find advice and repair how-to's in Tech Tips - i.e. "cadillac forums 2001 deville spark plug replacement" or something germane. Definitely read the stickys in Engines, Northstar

Seriously consider getting a real GM/Helm set of service manuals from eBay or www.helminc.com. OR, subscribe the car (multi-year) to www.alldatadiy.com - the GM service manuals plus a LOT more, including labor times, old parts pricing, TSBs, RPOs, recalls, DTCs, diagnostic trees.

TSB, RPO, DTC ????? The "Acronyms" sticky on this forum main thread page.

Burned valves are uncommon. The aluminum heads with hardened valve seats move a LOT of heat out of the exhaust valves very quickly.

 

[Ranger]

Re: 2001 Cadilac DeVille has a P0302 error code.

you need to have a thick skin
and not be offended by blunt replies
I can't imagine WHAT you mean by this - :hmm::noidea:

:histeric: :rofl:

 

[RobertDIY]

Re: 2001 Deville has a P0302 error code.

@ 1969: I have been around a few forms a lot. I do enjoy some good entertainment.

@ BassCatt: Thanks for the info.

@ Submariner: Thanks for the details and direction.

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My bad, the car is a Seville, I could not edit the post after making it. :/

 

[Submariner409]

Re: 2001 Cadilac DeVille has a P0302 error code.

Which Seville model ??? It helps with diagnosis, so please update your profile.

SLS = Seville Luxury Sedan - 275 hp engine, 3.11:1 economy final drive, the VIN Y powertrain.

STS = Seville Touring Sedan - 300 hp engine, 3.71:1 performance final drive, the VIN 9 powertrain.

Because the acronyms actually mean something, there is no such thing as a Seville Seville Luxury Sedan. Same as for the Deville Touring Sedan - DTS actually meant something until the 2006 non-Deville "DTS" series began.

 

[RobertDIY]

It is a SLS. The plugs looked warn so I'm going to replace them along with the air filter and coil banks. The misfire is not constant but intermittent. I'll report back.