Complete Repair Documents online
If you need repair information IMMEDIATELY and none of the 10w40.com articles could help, the fastest, cheapest solution is $25 for Alldata's online service manuals and Technical Service Bulletins.
Even if you decide to take your car to a mechanic, the included shop hours estimates let you know in advance how much you should be charged for the repair. This info alone is worth the $25 !!!
Alldata.com

Valve Guide repair options
Brought to you by: http://www.carleysoftware.com/      Article Usefulness: Very High   Complexity: Very High   
Diagnosing valve buide problems, and a very good descriptions of the options for repair, including a brief overview of the steps involved to do some of the repairs yourself
Keywords: car, truck, auto, fix, diag, repair, area, engine, valve, valve guide, oil, smoke, knurl, liners, honing

Fuel Pump problem diagnosis and repair
Brought to you by: babcox.com      Article Usefulness: High   Complexity: Medium   
A long and detailed article (with illustrations) describing how different types of fuel pumps work and how to troubleshoot different problems with them
Keywords: car, truck, auto, fix, diag, repair, area, engine, intake, fuel pump, mechanical, electric, pressure

Time belt and Chain options
Brought to you by: http://www.carleysoftware.com/      Article Usefulness: High   Complexity: High   
Describes how timing belts and chains play a part in engine performance, aftermarket parts, and diagnosing symptoms of problems
Keywords: car, truck, auto, fix, diag, repair, replace, area, engine, timing, belt, chain, aftermarket

Timing adjustment procedure for most pushrod-type engines
Brought to you by: www.gmperformance.org      Article Usefulness: Medium   Complexity: Medium   
Fairly straight forward article on how to set your engine timing using basic timing light and hand tools. Instructions based on Chevy pushrod engine.
Keywords: car, truck, auto, fix repair area engine timing set

Timing belt replacement
Brought to you by: babcox.com      Article Usefulness: Medium   Complexity: Medium   
How to determine when, and the best methods to change a timing belt. Installing a new belt incorrectly (or even having one break while the engine is running) can cause major internal engine damage, so doing it correctly is important
Keywords: car, truck, auto, fix, diag, repair, engine, area, timing, belt, OHC, serpentine,

Get quick answers from certified mechanics online
Have a car repair question that you need expert help with? Submit your question to Just Answer's network of verified professionals, and get a detailed answer quickly.
JustAnswer.com

Tune up checklist
Brought to you by: http://www.carleysoftware.com/      Article Usefulness: Medium   Complexity: Low   
A good checklist for what to consider as part of a Tune Up these days, now that cars no longer necessarily have a distributor - or even plug wires in some cases! Good as either a checklist for yourself, or to be sure your mechanic is coving the right issues
Keywords: car, truck, auto, fix, diag, repair, area, engine, tune up,

Adjusting valves on a Honda CRX
Brought to you by: CRX Si .com      Article Usefulness: Low   Complexity: High   
Decent article with pictures on valve adjustment on a Honda CRX. Good work with pictures, but assumes a certain engine knowledge, and also lacks a few suggestions, like pointing out the importance of not-overtighting valve cover bolts, etc - but a good article anyway.
Keywords: car, truck, auto, fix, repair, area, engine, valve, valves, mfg, honda, crx, adjust, timing

How to change fuel filter on GM Camaro & Firebird
Brought to you by: GMPerformance.org      Article Usefulness: Low   Complexity: Medium   
Step by step directions (including preparation steps) to change the fule filter on a small-block GM J-body (Camaro and Firebird)
Keywords: car, truck, auto, fix, repair, area, fuel, engine, filter, mfg, chevy, pontiac

Valve and head problem diagnosis and repair
Brought to you by: Autosite
A good guide for determining what to do with leaking valve stems. Not a detailed description for a specific make, but an overall description of the steps and problems you might encounter
Keywords: car, truck, auto, fix, repair, diagnose, engine, heads, valves, grind, stems, gasket, area, decision