By on June 23, 2010

TTAC Commentator PartsUnknown writes:

I just picked up a 2010 Accord sedan (don’t start – at least it’s a 5 speed stick) a month ago. Last weekend I was driving with a full, 2 gallon gas can in the trunk. I was forced to stop short due to some creative driving by some jabroney in a white panel van ahead of me. The ensuing gas spill wasn’t quite BP/Gulf of Mexico, but it did manage to soak part of my trunk carpet, and in a stroke of good fortune, the nozzle managed to wedge itself between the seatback and trunk floor, allowing gas to flow underneath my back seat cushion.

(Read More…)

By on June 21, 2010

TTAC Commentator 67dodgeman writes:

Sajeev, I have a question for the Piston Slap expert. My son drives my old ’99 Ford Ranger (extended cab, 4 cyl, manual, 2WD) with roughly 130,000 miles on the odometer. I had new tires put on 5 months back at the Firestone place. Then last week, the anti-lock brakes started acting up. As in heavily manipulating the pedal even during very light braking. I assumed the sensor was fried and pulled the fuse, after which everything worked normally. There was a slight ticking sound from the drive train, so I replaced U-joints. Still ticking, but no other obvious issues.

Then, Friday, the driver’s side rear tire and axle came loose. Luckily he was making a low speed U-turn and the last 6” of axle was still in the housing by time he stopped. We jacked the truck up, pushed the axle back in, and pushed it home (two blocks – very very lucky it happened there and not on I-45). I pulled the differential cover and immediately found the (bleeping) C-clip loose in the housing. The anti-lock sensor works off of teeth on the ring gear (just now figured that out), so I’m assuming that having about half the teeth ground off is the cause of the brake malfunction. The oil appeared original, had that burnt smell, and was full of grit. I’m now in the process of changing the whole assembly with a salvage yard spare due to the gear damage.

(Read More…)

By on June 17, 2010

One has to be slightly off their rocker to make a LeMons racecar. But then again, you also have to possess self-awareness not seen in most other forms of motorsport. Simply put, this race series totally rocks. And without any further ado, here are the final five vehicles in TTAC’s Ten Coolest Engineering Feats of The 24 Hours of LeMons Dallas. (Read More…)

By on June 14, 2010

While LeMons’ Judges Jonny and Phil took a breather to get married (not to each other) I was one of four people with the honor of taking their place. It’s true, there was a quartet of judges needed to do what those two professionals do on a regular basis, no matter what previous accounts may suggest. So I inspected close to 100 crap cars to see if they meet LeMons’ $500 purchase price criteria.  And while I did, I found the Ten Coolest Engineering Feats of The 24 Hours of LeMons. So let’s get right to it. (Read More…)

By on June 2, 2010

TTAC Contributor David Holzman writes:

Sajeev, my friend Polly, an avid sheepdogger, wants to know how much weight her early to mid-80s Vanagon can pull. Specifically, she is interested in buying a 700 lb trailer, in which she would haul up to six sheep, each of which weighs 100-150 lbs. Thus, she could end up pulling as much as 1,600 lbs, and who knows, maybe more. How much can she pull without damaging her pride and joy?

The Vanagon has a ’94 engine from a Subaru Legacy–she doesn’t know which engine–but is otherwise all old Veedub. 212k miles on the car, less on the engine, but how much less is unknown. No rebuilds that she knows of. I don’t believe she’s going to be doing any major hill climbing.

(Read More…)

By on May 26, 2010

John writes:

What do we know about the 1.8L V6 used in the 1990s’ Mazda MX-3 sport coupe? Why such a small engine and where did Mazda get it from/how did they design it and market it in the MX-3?

(Read More…)

By on May 24, 2010

Chew Bacca (no, really) writes:

I have a 1963 Ford Ranchero with the 144 cu in six, it hasn’t run in 8 years, but I recently got the go ahead from my dad to work on it, in addition to changing the oil, oil filter, draining the gas tank, and fuel filter, I replaced the spark plugs, spark plug wires, and ignition coil, and it still won’t spark. I put a charged battery in and the starter works, strong enough to move the car, any suggestions?

(Read More…)

By on May 19, 2010


Luke writes:

Sajeev, I was hoping you’d have an answer to my unusual problem and post my letter so I may get some feedback from the brilliant people who visit your website. I bought a 2004 GTO (automatic) back in September ’09. It’s in beautiful condition, yet has an unusual plight. Here goes:

(Read More…)

By on May 18, 2010

I received a love note from (former TTAC scribe) Frank Williams that was more than a little irk-inspiring.  Frank still reads AutoWeek, but that’s not a big deal: he noticed that Senior Editor Mark Vaughn’s column on the print rag is called “Piston Slap.” Or to put it in his own words:

“I don’t know how long he’s been using it, because this is just bathroom reading material that I toss as soon as I finish so I don’t have any back issues to look at.  However, I’ll bet your use of the title predates his.  Sounds like the making of a snarky blog to me.”

(Read More…)

By on May 17, 2010



John writes:

Hello: I have a question about a 2003 Toyota Camry with 130,000 miles. Every time I get the oil changed the attendant comes out with a clipboard and a long list of items needed to be done. Such as flush the engine oil, flush the power steering fluid, start using high mileage oil etc. Should I do this? So far I have not given in as the car runs good and it’s paid for.

(Read More…)

By on May 12, 2010

TTAC Commentator Daanii2 writes:

Hello, I enjoy your Piston Slap column. My question is this: my 1994 Honda Accord gets less than 10 miles per gallon. In fact, in mixed city and highway driving it gets about 7 miles per gallon. The figures are supposed to be 20 in city, 27 on highway, and 23 combined.

Is the car just drinking gas because it’s old? It has less than 100,000 miles on it. It has been maintained fairly well (although the paint has peeled and looks like crap). The idle is a bit rough, and seems to be getting rougher.

If something can be done to get better gas mileage, I’d like to do it. If it’s time to put the car out to pasture, though, I’ll do that too.

(Read More…)

By on May 10, 2010

TTAC Commentator Windswords writes:

My co-worker told me the other day that her daughters brand new 2009 Honda CRV (11,000 miles) was making a noise. Her daughter described it as a “chirping” sound. Thinking it had something to do with the belts I told her to see the dealer about it. She later told me that the dealer found the car was low on oil. As a matter of fact the car was 2.5 qts low. The car has the 1.6L 4-pot motor which takes (according to her) 5 qts. The car had just had the oil changed at the same dealership. They gave it another (complimentary) oil change and made sure it was filled this time. The noise is gone. The engine light did not come on during this episode.

(Read More…)

By on May 5, 2010

TTAC Contributor David Holzman writes:

Sajeev, my ’99 Accord (2.4L 4cyl, 170k) when cold makes noises that sound like slightly loud tappets. If the engine is around 10 degrees (scan gauge) when I start the car, I’ll hear it. If the temp is more like 30 degrees or above, if I baby the car until it’s around 140-150, I won’t hear anything, but if I push it, I’ll get the noise fairly loudly. So I don’t push it. When I described it to Ray Magliozzi (Clack, from NPR’s Car Talk show) he thought it was piston slap. What do you think?

(Read More…)

By on May 3, 2010


Andy writes:

TTAC: I have a question. My fiancée owns a 2008 Audi A4 2.0T with just under 15,000 miles on it. Tonight, the low oil indicator light came. So I said I’d get it checked out tomorrow. But before doing that, I figured I’d do a quick search to search about other A4 owners having oil issues. Turns out, they are. Both on topix.com and facebook.com, there are posts regarding the 2008 A4 2.0T burning a unexpected amount of oil and essentially Audi dealership and corporate claiming this is normal for turbo engines.

What do you guys think? Have you heard of this?

(Read More…)

By on April 28, 2010

Ken Dowd writes:

I’ve got high compression readings of over 190 lbs on all cyls on my TR4.  The head has been reworked twice that I know of, about .050 has been shaved.  I got these readings after putting the engine back together with all new sleeves, pistons, rings and a head/valve job.  I CCed. the head at 55cc and crunched  the numbers on several online compression ratio calculators and figured my compression to be about 9.5:1   Compression ratio on the stock engine is 9:1. Would you expect to see such  high compression readings with such a small increase in compression ratio?

I’ve searched the world over and cannot find a spec for compression on a healthy 2138cc TR4 engine.  Do you have any experience with after market solid copper oversized (thicker) head gaskets to bring down compression? That is the only thing I can come up with. Your thoughts would be appreciated.

(Read More…)

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