By on March 1, 2019

1979 Dodge Truck Brochure, Image: ChryslerTTAC Commentator Nate writes:

I’m working on a 1979 Dodge D200 with 360CID V8 4BBL carbureted engine, automatic trans, A.I.R. pump, EGR valve, and charcoal canister for the fuel tank hydrocarbons. The underhood factory decal says “California Medium Duty Emissions” and it has no catalytic converter from new. So here’s my situation:

  • All hoses, pipes etc. are there and all valves etc. are working .
  • The A.I.R. pump works but the diverter valve has failed (vacuum diaphragm leaks) and is in the open position so it’s always blowing fresh air into the exhaust manifolds.

Is it likely to pass the emissions test like this? I took my Ca. smog tester license training in 1984 and honestly only remember bits and pieces. So far I’ve not been able to find a new or good used diverter valve. Please advise!

(Read More…)

By on October 9, 2014

Capture

Justin writes:

Sajeev,

First I wanted to let you know that nearly everyday on my lunch break I check TTAC and each time I see a Piston Slap article I always make sure to read through it.  I admire your knowledge and have learned quite a bit from your articles. I guess that I have a two part question.

The first part being since when has it become “acceptable” that a modern (low mileage) engine can consume a quart of oil in less than 5K miles.  Audi and VW jump the front on my mind with their 2.0T mills, but I hear more and more through the woodwork about engines drinking oil.  The second part of my question probably has more to do with correlation than causation but it seems like direct injection plays a role in this IMO unacceptable oil consumption.

Thanks!

(Read More…)

By on May 3, 2013

QOTD - Angering Greens With Excess Pollution - Picture courtesy of Murilee MartinWe won’t get into the politics of emission-control laws here, except to observe that you’re either a Marx-quoting, global-warming-duped, vegan one-worlder who wants to crush personal initiative beneath tons of bureaucracy and force everyone to ride an electric bus to their groat rations at the communal kitchen… or you’re an Ayn-quoting, gun-fondling, toxic-waste-spreading wingnut who cackles with glee at the mental image of inner-city children shriveling like salt-soaked slugs beneath tons of lead, oxides of nitrogen, and unburned hydrocarbons. Now that you’ve all chosen sides, imagine that every official in every level of every government in the world waved their magic legislative pens and put the kibosh on all emissions-related regulations concerning motor vehicles. Would you go clean, dirty, or in-between with your next vehicle purchase? (Read More…)

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