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Just as a general note - got my car back from my mechanic today, and apparently the noise in the engine bay is... fairly normal. I suppose I've never really heard a PRV-6 before (well, one other, one...

2991 has been in my ownership for the last decade (I bought it in amazing condition from the original owner who kept receipts for every nut and bolt ever repaired).

Grey interior, 5-speed,...

Is there much point to stripping the cat from the car? I imagine the original, at 30 years old, is either hopelessly congested or not doing its job any longer.

I know that ripping the cat from...

Was my 'daily driver' (if one can call it that) for several years; I bought it in late 2001, and used it to get to university three days per week. Drove it to the gym, on weekends, etc. It was my...

I was looking at SpecialTAuto for fuel pumps, and they seem to have... several different kinds, some with extra bits (i.e. lines, clamps, etc.) and some without.

I really have no idea which pump I...

Several times in the past years, I've driven long-distance - 800 kilometers (what is that, 500 miles?) and had no issue whatsoever - even had it going over 200 KPH on a long, flat, open stretch of...

Heya!

Fuel level in the tank is low-ish - a little over 1/4 tank. The sound is definitely quieter when the car is cool and gets louder when the car is warm and has been running awhile.

OEM pump...

Good question - I don't think it changes, and heck, you were there the other night - I'd find it odd that the transmission would make audible noises (strong ones at that) as far forward as the trunk...

I actually wrote my thesis paper for my B.A. on John DeLorean and the DMC, mostly from the perspective of the socio-political climate of Northern Ireland at the time (The Troubles were very bad, back...

Yikes! I never imagined that it might be the gears; thanks for the tip on that one. My mechanical expertise sort of precludes me from getting in there and checking this, but my mechanic may be brave...

Interesting about the transmission nut - where is that and how would one check it?

I actually drove over to a local DeLorean owner's place (there's all of three in our rather large city), and his...

OK, thanks a lot Dave - gaskets or valves it is - my original guess was valves, so at least I'm in the area.

If anyone else wants to chime in, always appreciated!

Manual - but... it's definitely coming from the engine area. I've never heard of anything transmission-related making that kind of noise (but there's a first for everything, and DeLorean's are indeed...

It's loudest when the car is warm - it's quietest (almost unnoticeable) when the engine is cool. Can't comment as to the 'under load' bit - when I'm driving forward (i.e. doing the speed limit down a...

Audio recording of noise - http://www.youtube.com/watch?v=-pknNE7x13I

Last update - took an audio recording of the hum by hodling the audio received up to the transmission tunnel area from inside...

http://www.youtube.com/watch?v=eLz3kcQwsrA

NEW video - brighter, a bit longer.

Anyone able to guess more conclusively as to exhaust gaskets or valve job?

Thanks, David, by the way.

Thanks, I appreciate the suggestion - if it's any help, the noisier part was taken when I had the recorder beside the passenger-side bank of cylinders - that's part of the reason I assumed that it...

Had the issue for about a year, now - annoying engine noise. Sometimes it makes me think exhaust gaskets, sometimes I think valves, sometimes I swear the car is possessed by gremlins.

Only factors...

Hey there - do I dectect a fellow DeLorean owner in Vancouver? Ye gods, I thought there were only one or two in the whole city, of which mine was one.

I live in Coquitlam, and my mechanic is in...

Cooper Cobra tires are decent, and as far as I am aware (here in Canada, at least), I can still order them through my local tire store - I bought some new ones just last year.

Thanks for the suggestions, guys; the car is going back to my mechanic next week (I have a really good shop out here that's brave enough to work on the car), and it's going in to have the...

Interesting - would that be the accumulator "going", or just it randomly coming loose?

How would one check either way? Easy to get at?

Car on, ignition on, everything running; the hum is *barely* audible when driving.

Interesting; I replaced the fuel pump about four years ago - the sound *is* similar to a fuel pump noise, but it doesn't seem to be coming from the tank area, it's coming more from the tranny-tunnel...

Heya guys - long-time reader, seldom poster - mostly because my DMC is usually running quite well apart from easy-to-fix age-related repairs. As an aside, I've owned the car for nearly ten years, now...