Intermittent Cylinder Misfire Subaru Valve Guide Problem

Whenever you remove a Subaru cylinder head you should always look at the valve guides to see if there is any evidence of them moving, particularly the exhaust valve guides. I have seen these guides moves causing misfires or even worse completely drop causing valve to piston interference. The problem seems more prevalent in the 2.5L engines but I have… Read More

Subaru 2.0 DOHC Turbo Cylinder Misfire Broken Valve Spring

I had a 2002 Subaru Impreza WRX in the shop the other day that had me going for a bit. It’s been a long time that I have ran into a cylinder misfire problem that I couldn’t just go directly to the source of the problem by some quick preliminary tests. Here are the four quick tests I will use… Read More

Subaru MT Transmission Snout Repair

I have ran into a couple occurrences where the release bearing completely comes apart and damages the input shaft housing or also known as the transmission snout. At first glance you would assume that the transmission case is completely destroyed, time for transmission rebuild right? Well that’s not exactly true, I have found a couple companies that make repair kits… Read More

Subaru Oil Consumption Problems

Subaru Oil Consumption Repair Most Subaru owners are aware of the infamous headgasket problem. Along with frequent questions and concerns from customers about Subaru headgasket problems I have also had a lot of oil consumption complaints and concerns from my customers. Over the years of rebuilding and repairing these engines I have noticed a common failure that is consistent with… Read More

Subaru AT Oil Temp Lite Diagnostic Procedure

Early model Subaru Automatic transmission diagnostic code retrieval procedure. This procedure is specifically for 98 Subaru OB but stays the same for all similar models. I do not believe this will work for the 2.5 SOHC Subaru Outbacks. Locate the diagnostic connector under the dash then follow the procedure. TCM will flash codes through the “AT Oil Temp” lite. Please… Read More

Subaru Timing Belt Replacement Tips & Advice

Subaru Timing Belt Facts Subaru 2.5 DOHC and SOHC are interference engines Subaru timing belts are due for replacement at 105K Oil will shorten the life of your timing belt The water pump should be replaced with the timing belt When replacing the timing belt on a Subaru 2.5L SOHC or DOHC motors there are a few common things to… Read More

Subaru Control Arm Bushing Repair

The newer Subaru models changed the type of lower control arms that was used for year in the early legacy’s and up to 1999 or 2000 Legacy Outback’s. Both suspension types are fine but these newer ones are having control arm bushing failure. Don’t be fooled into replacing the control arm just because the bushing is bad. The reason I… Read More

Chrysler Town & Country – Severe Misfire

This article is directed towards a Chrysler Minivan that I had in the shop the other day with a strange problem that I have seen a few times before so I wanted to inform others about this problem. The problem starts from a simple issue you would never expect to lead to this. Take a look at the cut open… Read More

Subaru Coolant Gauge Problems

This article will explain some basic testing procedures and common fixes for problems with the coolant gauge. When diagnosing any coolant temperature problem the first thing you need to do is make sure the cooling system is operating properly and the vehicle is running at a normal operating temperature. If you’re having problems with your coolant gauge not reading correctly… Read More

General Powertrain Diagnosis

Despite the sophistication of today’s powertrain control systems, even the most advanced software program cannot disguise a worn camshaft lobe, a burned valve or a loose timing chain. Unfortunately, even though these types of mechanical failures create recognizable symptoms of poor performance, many technicians get caught up analyzing pulse trains without ever considering valvetrains! The fact is, illuminated MILs (Malfunction… Read More