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#1
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Lifter Tick or Fuel Knock? *VIDEO*
Hey guys I've noticed a loud tick that has become increasingly consistent over the past few weeks. It occurs whether the engine is hot or cold and proportionally increases with the engines RPM. I'm beginning to think the noise is from a sticky lifter as opposed to a fuel knock on an injector. I was hoping someone with a better trained ear could tell me.
Some background info on the car: 1987 300d om603 turbo 118,xxx 2nd owner (owned for about 6 months) service records indicate fuel injectors are original glow plugs replaced in 1999 roughly 20k miles ago (it wasn't driven much the last decade) Here is the link to the video of my engine ticking: 1987 W124 300d Lifter Tick - YouTube NOTE: the engine is currently at operating temperature Any thoughts or opinions are greatly appreciated! |
#2
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It has the frequency of lifter tick. To be sure, disconnect the belt tensioner damper at the head and see if the noise persists.
Sixto 87 300D |
#3
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Lifter noise. Oil change may help. I just switched to Mobil 1 thinking it could help stop the noise better than regular oil.
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Present 1987 300SDL 1991 300SL 1990 560SEL 2001 ML320 Past 1969 200D 1979-82 1983 300SD 1984-85 1972 250C 1982-02 1995 S350 2011 1997 S320 2012 |
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#5
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FYI
Quote:
Quote:
Either: * The throttle cable needs adjustment. * The BRACKET is bent down where your throttle cable screw adjustment attaches. * The Electronic idle speed control has issues. Doubtful from the sound. Note: You have e-mail................ "ngarover", You have at least two failing glow plugs, and serpentine belt tensioner / shock failure noise. .
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ASE Master Mechanic asemastermechanic@juno.com Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/ |
#6
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Gotta love these thread starting ninjas...
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BEULLER!?!?!?!? Chop chop, inquiring minds wanna know. MBZ123
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1987 300SDL "Rhona" 218k 1986 300SDL "Johanna" 166k - Abducted 5/15 outta SFV Reward 4 info 1984 300TD "Petra" 212k - Parts yard pirate, arrrrgh 1982 300CD "FrankenFemme" 178k - Eyes only TS-XWRKS transplant abomination (loc. classified) 1980 230CE "Lulu" aka "Terminal" 277k - Dying the slow death 1985 300CD "Gerda" 203k - She ain't playin' SOLD 1983 300TD "Svetlana" 240k...and pleading for more. SOLD "What a heavy load Einstein must've had...F&@%!NG morons everywhere!" - David Lynch |
#7
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Only took me a year and half to get back to you guys lol. A new record. My apologies.
Just as many of you suggested, the noise was a sticky lifter. I ended up draining some oil and adding a quart or so of fresh transmission fluid to the crankcase. Drove roughly 20 miles on some back roads in a low gear and voila no more tick. I changed the oil/filter as well afterwards using mobil delvac. This was all in vain of course, as someone hit me a few months later putting the car out of commission. I parted the car and sold the motor to a gentleman for his w123. In the time since, I've bought and just recently sold another 87' 300d. I switched that motor to rotella t6 and it made a noticeable improvement during cold weather cranking. It also made a noticeable contribution to the surface of the parking lot at my apartment complex lol. I recommend you plan for new seals if making the switch. Not to beat a dead horse but while we're on the topic of engine ticks and tacks, I've gotten great results running diesel purge through the pickup and return lines. It really smooths out the idle on a neglected motor. I run a can on each new (to me) diesel I get. B20 also acts as a good solvent and is worth running every now and again IMO. Sorry for taking so long to reply. Better late than never I suppose. |
#8
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A new set of lifters costs $120 and 2 hours of DIY labor.
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CENSORED due to not family friendly words |
#9
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Never priced it out before. I figured it would be more expensive than that.
I'll keep that in mind if I run into future lifter issues. Heading over to VA this weekend to look at a 300td.
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1994 E500 1990 300TE OM603 MynaPump Holset HE341VE Project 1995 E320 - Sold; 1988 300CE - Sold; 1993 400E - Sold; 1987 300D - Scrapped; 1987 300D - Sold; 1984 500SEC - Sold; 1985 500SEC - Sold; 1986 190E 2.3-16V - Sold; 1987 300TD - Sold |
#10
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Both the price of new lifters and using ATF is relevant to my interests. How does ATF clear lifter knock?
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