2024 Canadian Poncho Calendars are Now Available! CLICK HERE

 

 

Members Login
Username 
 
Password 
    Remember Me  
Post Info TOPIC: awful racket under the hood


Guru

Status: Offline
Posts: 505
Date:
awful racket under the hood


This morning going to the car show in Lindsay, I was almost parked and a noise started. At idle is was a loud tick, and got exponentially worse with a little throttle. (This is a 454 LS6 crate engine.) I sure got lots of opinions on what is was, from a bad plug to a fuel pump to a bent pushrod. I decided to get my trailer and haul her home. I'm leaning to the bad pushrod diagnosis, getting someone to have a look tomorrow.

__________________


Poncho Master!

Status: Offline
Posts: 2050
Date:

Same thing happened to my buddy's fat block. happened within 3 hours on the first start-up.

__________________


Guru

Status: Offline
Posts: 962
Date:

I had a tick with my Pontiac motor, only noticeable when it warmed up. Turned out to be a bad camshaft lobe. Lets hope yours isn't.......

__________________

John

1972 Pontiac Lemans (daughter's car) 
2005 Pontiac Grand Am
2004 Ford Explorer Sport Trac



Poncho Master!

Status: Offline
Posts: 1411
Date:

pull the fan belts off, to eliminate accessory noise, find a broken hockey stick with a pointy end , put your ear against the none pointy end and use as a stethoscope, move along the valve covers and distributor, cheap quick diagnostic to see how far you have to pull things apart.

__________________

pontiax- (canadian pontiac X frame)1964 Parisienne 2dr. Hardtop ,lagoon aqua metallic (Q) ,421 cid Dart Industries block and heads. 550 hp. 575 ft lb  of torque.

 



A Poncho Legend!

Status: Offline
Posts: 48634
Date:

Do you know about the trick to pinch off the fuel pump inlet hose to diagnose if that's the noise? Very very quick and easy, something you can do on your own to at least verify if that is the problem.

__________________

1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars



Poncho Master!

Status: Offline
Posts: 1411
Date:

Carl Stevenson wrote:

Do you know about the trick to pinch off the fuel pump inlet hose to diagnose if that's the noise? Very very quick and easy, something you can do on your own to at least verify if that is the problem.



does the noise go away when the fuel bowl runs out?

lol



-- Edited by pontiax on Sunday 18th of July 2010 10:16:36 PM

__________________

pontiax- (canadian pontiac X frame)1964 Parisienne 2dr. Hardtop ,lagoon aqua metallic (Q) ,421 cid Dart Industries block and heads. 550 hp. 575 ft lb  of torque.

 



A Poncho Legend!

Status: Offline
Posts: 48634
Date:

laughing.gif Well yes, I guess it does then too but the idea is to pinch the inlet hose at the pump with something like a vice grip (make sure the jaws are taped or something so it doesn't cut the hose) and if it's the pump rattling the noise should disappear.

__________________

1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars



Canadian Poncho Superstar!

Status: Offline
Posts: 7176
Date:

sounds like the noise I had with my BBC , bent pushrod on # 2 cylinder, happened to 3 pushrods until I went to roller tip rockers?? all on that #2 cylnder.

here's hopin it's something simple !!

__________________

later...rog

AADD supporting member !!
I'm a collector...not a builder!!Located in sunny central Saskatchewan at the lakehead!


Guru

Status: Offline
Posts: 505
Date:

I was at work when the mechanic phoned me about the engine. He says it's in the bottom end, will have to pull the engine this week. I need to find a good engine rebuilder within an hour of Lindsay, maybe Parry Automotive in Orillia. Has anyone used them?

__________________


A Poncho Legend!

Status: Offline
Posts: 35601
Date:

How old is Crate Motor?   Sounds like you should truck it to the shop Ray uses in York



__________________

 



Guru

Status: Offline
Posts: 505
Date:

The engine was bought new from GM in 1992. It has no more than 7500 miles on it. I've only had it for less than 1 year.

__________________


A Poncho Legend!

Status: Offline
Posts: 35601
Date:

So much for Warranty  lol     hopefully its something very repairable  wise to trailer it home..

__________________

 



A Poncho Legend!

Status: Offline
Posts: 20051
Date:

427carl wrote:

 

How old is Crate Motor?   Sounds like you should truck it to the shop Ray uses in Scarborough



Bottom end is usually an oiling problem.

Expert Engines. Yes he built me a very very good 5.8 Vortec. Just passed 10,000 Km since January rebuilt, gets stronger every day.

http://www.expertengines.ca/

 Call Tony and see what he says. I find his prices very reasonable too. He does warranty work for the GM dealers in Toronto. There is always half a dozen Cadillacs there getting new Northstars.




-- Edited by 73SC on Monday 19th of July 2010 11:42:48 PM

__________________

Ray White, Toronto ON

1973 LeMans 454 "Astro-Jet"

Built March 9, 1973 - Oshawa ON

1993 Corvette Convertible LT 1

Built January 10, 1993 - Bowling Green Kentucky 

 




Guru

Status: Offline
Posts: 505
Date:

Unfortunately it was an oil problem, something that should be preventable. I had spent a lot of time replacing the oil pan gasket, as well as the valve cover gaskets. I thought I had the problem licked, should have checked it more often. It lost half the oil in 300 miles, way worse than I realized. I have no clew where all that oil went, except for undercoating the floor pan, right side. Very expensive lesson to keep a closer eye on the oil level.

Still wondering if anyone has used Parry Automotive in Orillia, they advertise doing vintage engines, know of one person that was quite happy there. I know Matt from Lindsay Driveline, he did my old 261 Pontiac engine, would likely be happy with him too.

-- Edited by red rat on Tuesday 20th of July 2010 05:21:53 AM

__________________


A Poncho Legend!

Status: Offline
Posts: 20051
Date:

Leo, you are right about an expensive lesson but hopefully your experience will help us all. I know when I drive my old car only 300 to 500 miles a year it is easy to ignore the oil, I mean it would take 6 year driving to get to 3,000 miles a normal change interval.

I make a habit of checking the levels weekly on my old car, usually Saturday morning and on my newly rebuilt Vortec I am very consciencious, plus changing before 5,000 km to keep warranty valid but good practice anyway.

__________________

Ray White, Toronto ON

1973 LeMans 454 "Astro-Jet"

Built March 9, 1973 - Oshawa ON

1993 Corvette Convertible LT 1

Built January 10, 1993 - Bowling Green Kentucky 

 




Poncho Master!

Status: Offline
Posts: 1628
Date:

So sorry to hear of your troubles!.
Here's another suggestion for an engine builder..
Johnny Stefko has years of experience building all motors including those of many big time racers also's a great guy too!.

Stefko Racing Engines
11940 Highway 48
Stouffville, Ontario
L4A 7X5

Phone: (905) 642 - 6289

email: info@stefkoracing.com


smile.gif

__________________

 

 

I like real cars best...especially the REAL real ones!
----------------------------------------------------------------



Poncho Master!

Status: Offline
Posts: 2656
Date:

A friend has a built and oiled 462 street engine for sale, asking price is $3500

__________________
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.

Tweet this page Post to Digg Post to Del.icio.us
.
Support Canadian Poncho!
Select Amount:
<
.
.
.